CN204730957U - For rotor and the stator temperature testing circuit of wind-powered electricity generation high-speed permanent magnetic generator - Google Patents
For rotor and the stator temperature testing circuit of wind-powered electricity generation high-speed permanent magnetic generator Download PDFInfo
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- CN204730957U CN204730957U CN201520488750.8U CN201520488750U CN204730957U CN 204730957 U CN204730957 U CN 204730957U CN 201520488750 U CN201520488750 U CN 201520488750U CN 204730957 U CN204730957 U CN 204730957U
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- thermometer sensor
- platinum resistance
- resistance thermometer
- rotor
- stator
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Abstract
A kind of rotor for wind-powered electricity generation high-speed permanent magnetic generator and stator temperature testing circuit, its two-way platinum resistance thermometer sensor, constant-current source circuit (1) is connected with stator platinum resistance thermometer sensor, rotor platinum resistance thermometer sensor, respectively, stator platinum resistance thermometer sensor, and rotor platinum resistance thermometer sensor, are connected with stator platinum resistance thermometer sensor, filtering circuit, rotor platinum resistance thermometer sensor, filtering circuit respectively, and two filtering circuits are connected with grounding circuit.The temperature signal of stator platinum resistance thermometer sensor, and rotor platinum resistance thermometer sensor, is after filtering after circuit (2) filtering interfering, obtain stable generator amature and the temperature signal of stator, by grounding circuit (3), this temperature signal is carried out signal lifting and single-point grounding process, be converted to the temperature signal be independent of each other between stator platinum resistance thermometer sensor, and rotor platinum resistance thermometer sensor, be applicable to temperature survey under the strong interference environment such as rotor and stator of magneto.
Description
Technical field
The utility model relates to a kind of temperature sensing circuit, particularly a kind of rotor of wind-powered electricity generation high-speed permanent magnetic generator and stator temperature testing circuit.
Background technology
Wind energy is as a kind of clean regenerative resource; more and more be subject to the attention of countries in the world; total power wind power generating set is high as a kind of generating efficiency; the unit of failure rate is low; very high ratio is occupied in high-power wind turbine unit; as the high-speed permanent magnetic generator of the Primary Component of total power unit, for the temperature detection of its rotor and stator, effectively can judge the running status of generator and carry out temperature protection and load shedding is run.The temperature detection of existing high-speed permanent magnetic generator measures platinum resistance thermometer sensor, both end voltage by electric bridge dividing potential drop mode, and this temperature detection easily produces zero point drift, and the precision requirement for resistance is also very high, poor anti jamming capability; Another is by producing a pulse constant current source signal, is then captured in the platinum resistance thermometer sensor, magnitude of voltage in pulse stage casing, and this method circuit is complicated, and platinum resistance thermometer sensor, thermal value is little, but cost performance is high, poor anti jamming capability, is not suitable for noisy occasion.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of new rotor being applied to wind-powered electricity generation high-speed permanent magnetic generator and stator temperature testing circuit, compare with existing temperature sensing circuit, this circuit anti-interference ability is strong, isolation can be realized between each road, cost is low, structure is simple, and cost performance is high.
The utility model solves the technical scheme that its technical matters adopts:
Be applied to rotor and the stator temperature testing circuit of wind-powered electricity generation high-speed permanent magnetic generator, it is characterized in that, described temperature sensing circuit comprises platinum resistance thermometer sensor, constant-current source circuit, filtering circuit and grounding circuit.Filtering circuit comprises stator platinum resistance thermometer sensor, filtering circuit and rotor platinum resistance thermometer sensor, filtering circuit.Platinum resistance thermometer sensor, constant-current source circuit produces the steady current of 1mA.Two-way platinum resistance thermometer sensor, constant-current source circuit is connected with stator platinum resistance thermometer sensor, rotor platinum resistance thermometer sensor, respectively, stator platinum resistance thermometer sensor, is connected with stator platinum resistance thermometer sensor, filtering circuit, rotor platinum resistance thermometer sensor, filtering circuit with rotor platinum resistance thermometer sensor, decibel, and two filtering circuits are connected with grounding circuit.The platinum resistance thermometer sensor, temperature signal circuit filtering interfering after filtering of stators and rotators, obtain stable generator amature and the temperature signal of stator, by grounding circuit, this temperature signal is carried out signal lifting and single-point grounding process, be converted to the temperature signal be independent of each other between stators and rotators platinum resistance thermometer sensor.
Described platinum resistance thermometer sensor, constant-current source circuit is made up of operational amplifier, voltage-reference, Chip-R and precision resistance.Voltage-reference is connected with the in-phase input end of operational amplifier, and the in-phase input end of operational amplifier is connected with Chip-R with reverse input end, and the output terminal of operational amplifier is connected with precision resistance, composition 1mA constant-current source circuit.
Described filtering circuit comprises stator platinum resistance thermometer sensor, filtering circuit and rotor platinum resistance thermometer sensor, filtering circuit.Stator platinum resistance thermometer sensor, filtering circuit is composed in parallel by ten nonpolarity ceramic condensers of multilayer sheet type, and rotor platinum resistance thermometer sensor, filtering circuit is also composed in parallel by ten nonpolarity ceramic condensers of multilayer sheet type.The both positive and negative polarity of the input end of stator platinum resistance thermometer sensor, filtering circuit is connected with the both positive and negative polarity of stator platinum resistance thermometer sensor, and the both positive and negative polarity of the input end of rotor platinum resistance thermometer sensor, filtering circuit is connected with the both positive and negative polarity of rotor platinum resistance thermometer sensor.The negative pole of the output terminal of stator platinum resistance thermometer sensor, filtering circuit is connected with grounding circuit, and the negative pole of the output terminal of rotor platinum resistance thermometer sensor, filtering circuit is connected with grounding circuit.
Described grounding electricity routing voltage lifting resistance and Zero-ohm resistor composition, one end of voltage lifting resistance is connected with the negative pole of the platinum resistance thermometer sensor, of stators and rotators, and the other end of voltage lifting resistance is connected with Zero-ohm resistor, and Zero-ohm resistor is connected to ground.
Temperature detection testing circuit of the present utility model has following beneficial effect: anti-strong jamming ability is strong, and accuracy of detection is high, be applicable to the electromagnetic environments such as the stators and rotators of high-speed permanent magnetic generator badly under temperature detection.
Accompanying drawing explanation
Fig. 1 the utility model circuit structure block diagram;
The schematic diagram of Fig. 2 the utility model platinum resistance thermometer sensor, constant-current source circuit;
The schematic diagram of Fig. 3 the utility model filtering circuit;
The schematic diagram of Fig. 4 the utility model grounding circuit.
In figure: 1 platinum resistance thermometer sensor, constant-current source circuit, 2 filtering circuits, 3 grounding circuit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
As shown in Figure 1, the utility model comprises platinum resistance thermometer sensor, constant-current source circuit 1, filtering circuit 2 forms with grounding circuit 3.Platinum resistance thermometer sensor, constant-current source circuit 1 produces the steady current of 1mA, be connected with the platinum resistance thermometer sensor, of stators and rotators, then produce temperature signal by the platinum resistance thermometer sensor, of stators and rotators, the platinum resistance thermometer sensor, of stators and rotators is connected with filtering circuit 2, and filtering circuit 2 is connected with grounding circuit 3.Platinum resistance thermometer sensor, temperature signal circuit 2 filtering interfering after filtering of stators and rotators, is then converted to the temperature signal be independent of each other between stators and rotators platinum resistance thermometer sensor, by grounding circuit 3.
Described platinum resistance thermometer sensor, constant-current source circuit 1 by voltage-reference, operational amplifier, chip capacitor, Chip-R and precision resistance form, the steady current of 1mA can be produced; Voltage-reference is connected with the in-phase input end of operational amplifier, and the in-phase input end of operational amplifier is connected with Chip-R with reverse input end, and the output terminal of operational amplifier is connected with precision resistance.
Described filtering circuit 2 comprises stator platinum resistance thermometer sensor, filtering circuit and rotor platinum resistance thermometer sensor, filtering circuit.Rotor platinum resistance thermometer sensor, filtering circuit and stator platinum resistance thermometer sensor, filtering circuit compose in parallel by ten nonpolarity ceramic condensers of multilayer sheet type.The both positive and negative polarity of the input end of rotor platinum resistance thermometer sensor, filtering circuit is connected with the both positive and negative polarity of rotor platinum resistance thermometer sensor, and the both positive and negative polarity of the input end of stator platinum resistance thermometer sensor, filtering circuit is connected with the both positive and negative polarity of stator platinum resistance thermometer sensor.The negative pole of the output terminal of rotor platinum resistance thermometer sensor, filtering circuit is connected with grounding circuit, and the negative pole of the output terminal of stator platinum resistance thermometer sensor, filtering circuit is connected with grounding circuit.The undesired signal filtering that generator can produce by described filtering circuit 2.
Described grounding circuit 3 is made up of voltage lifting resistance and Zero-ohm resistor, and one end of voltage lifting resistance is connected with the negative pole of the platinum resistance thermometer sensor, of stators and rotators, and the other end of voltage lifting resistance is connected with Zero-ohm resistor, and Zero-ohm resistor is connected to ground.The temperature signal of the platinum resistance thermometer sensor, of described wind-powered electricity generation high-speed permanent magnetic generator amature and stator can be carried out lifting by described grounding circuit 3, carries out single-point grounding process simultaneously, effectively avoids the mutual interference of the temperature signal of stators and rotators.
Fig. 2 is platinum resistance thermometer sensor, constant-current source circuit 1 of the present utility model.As shown in Figure 2, in platinum resistance thermometer sensor, constant-current source circuit 1 ,+12V voltage is connected with the negative pole of the first voltage-reference Z1 through the 7th precision resistance R7, the plus earth AGND of the Z1 of the first voltage-reference; One end of first patch capacitor C1 is connected with the negative pole of the first voltage-reference Z1, and other one end of the first patch capacitor C1 is connected with the positive pole of the first voltage-reference Z1, plays filter effect; The negative pole of the first voltage-reference Z1 produces the voltage of 2.5V, and 2.5V voltage signal enters 3 pins of the first operational amplifier U1A in-phase input end after the 9th Chip-R R9.2 pins of the first operational amplifier U1A inverting input are connected with one end of the first Chip-R R1, other one end ground connection AGND of the 1st Chip-R R1,2 pins of the inverting input of the first operational amplifier U1A are connected with one end of the second Chip-R R2, and the other end of the second Chip-R R2 is connected with 1 pin of the first operational amplifier U1A output terminal.1 pin of the first operational amplifier U1A output terminal is connected with one end of the 5th precision resistance R5, other one end of 5th precision resistance R5 is connected with 5 pins of the in-phase input end of the second operational amplifier U1B, 6 pins of the inverting input of the second operational amplifier U1B are connected with 7 pins of the output terminal of the second operational amplifier U1B and reach voltage follow function, 7 pins of the output terminal of the second operational amplifier U1B are connected with one end of the tenth Chip-R R10, other one end of tenth Chip-R R10 is connected with 3 pins of the in-phase input end of the second operational amplifier U1A, 5 pins of the in-phase input end of the second operational amplifier U1B are connected with the anode PT1+ of the platinum resistance thermometer sensor, of stator, produce the electric current of 1mA, + 12V voltage is connected with one end of the 8th precision resistance R8, other one end of 8th precision resistance R8 is connected with the negative pole of the second voltage-reference Z2, the plus earth AGND of the Z2 of the second voltage-reference, one end of second patch capacitor C2 is connected with the negative pole of the second voltage-reference Z2, one end is connected with the positive pole of the second voltage-reference Z2 in addition, play filter effect, the negative pole of the second voltage-reference Z2 produces the voltage of 2.5V, and 2.5V voltage signal enters 10 pins of the 3rd operational amplifier U1C in-phase input end after the 11 Chip-R R11.9 pins of the 3rd operational amplifier U1C inverting input are connected with one end of the 3rd Chip-R R3, other one end ground connection AGND of the 3rd Chip-R R3,9 pins of the inverting input of the 3rd operational amplifier U1C are connected with one end of the 4th Chip-R R4, and the other end of the 4th Chip-R R4 is connected with 8 pins of the 3rd operational amplifier U1C output terminal.8 pins of the 3rd operational amplifier U1C output terminal are connected with one end of the 6th precision resistance R6, other one end of 6th precision resistance R6 is connected with 12 pins of the in-phase input end of four-operational amplifier U1D, 13 pins of the inverting input of four-operational amplifier U1D are connected with 14 pins of the output terminal of four-operational amplifier U1D and reach voltage follow function, 14 pins of the output terminal of four-operational amplifier U1D are connected with one end of the 12 Chip-R R12, other one end of 12 Chip-R R12 is connected with 10 pins of the in-phase input end of the 3rd operational amplifier U1C, 5 pins of the in-phase input end of four-operational amplifier U1D are connected with the anode PT2+ of the platinum resistance thermometer sensor, of rotor, produce the electric current of 1mA.
Fig. 3 is filtering circuit 2 of the present utility model.As shown in Figure 3, the positive pole PT1+ of stator platinum resistance thermometer sensor, is connected with the input anode of stator platinum resistance thermometer sensor, filtering circuit, and the negative pole PT1-of stator platinum resistance thermometer sensor, is connected with the input cathode of stator platinum resistance thermometer sensor, filtering circuit; Stator platinum resistance thermometer sensor, filtering circuit by ten multilayers without lopsided ceramic capacitor: C3, C4, C5, C6, C7, C8, C9, C10, C12, C13 compose in parallel.The positive pole PT1+ of the platinum resistance thermometer sensor, of rotor is connected with the input anode of rotor platinum resistance thermometer sensor, filtering circuit, and the negative pole PT1-of the platinum resistance thermometer sensor, of rotor is connected with the input cathode of rotor platinum resistance thermometer sensor, filtering circuit; Rotor platinum resistance thermometer sensor, filtering circuit by ten multilayers without lopsided ceramic capacitor: C13, C14, C15, C16, C17, C18, C19, C20, C21, C22 compose in parallel.
Fig. 4 is grounding circuit of the present utility model.As shown in Figure 4, the negative pole PT1-of the platinum resistance thermometer sensor, of stator is connected with one end of the first voltage lifting resistance R1, the other end of the first voltage lifting resistance R1 is connected with stator ground AGND1, the negative pole PT2-of the platinum resistance thermometer sensor, of rotor is connected with one end of the second voltage lifting resistance R2, the other end of the second voltage lifting resistance R2 is connected with rotor ground AGND2, stator ground AGND1 is connected with one end of the 3rd Zero-ohm resistor R3, the other end of the 3rd Zero-ohm resistor R3 is connected with ground AGND, rotor ground AGND2 is connected with one end of the 4th Zero-ohm resistor R4, the other end of the 4th Zero-ohm resistor R4 is connected with ground AGND.
The utility model can be applied to different occasions as required.Such as, the temperature detection of transducer power unit can be applied to, and the inner rotator of motor and the temperature detection of stator.
Claims (5)
1. the rotor for wind-powered electricity generation high-speed permanent magnetic generator and stator temperature testing circuit, it is characterized in that, described temperature sensing circuit comprises platinum resistance thermometer sensor, constant-current source circuit (1), filtering circuit (2) and grounding circuit (3); Filtering circuit (2) comprises stator platinum resistance thermometer sensor, filtering circuit and rotor platinum resistance thermometer sensor, filtering circuit; Two-way platinum resistance thermometer sensor, constant-current source circuit (1) is connected with stator platinum resistance thermometer sensor, rotor platinum resistance thermometer sensor, respectively, stator platinum resistance thermometer sensor, and rotor platinum resistance thermometer sensor, are connected with stator platinum resistance thermometer sensor, filtering circuit, rotor platinum resistance thermometer sensor, filtering circuit respectively, and two filtering circuits are connected with grounding circuit; The temperature signal of stator platinum resistance thermometer sensor, and rotor platinum resistance thermometer sensor, is after filtering after circuit (2) filtering interfering, obtain stable generator amature and the temperature signal of stator, by grounding circuit (3), this temperature signal is carried out signal lifting and single-point grounding process, be converted to the temperature signal be independent of each other between stator platinum resistance thermometer sensor, and rotor platinum resistance thermometer sensor.
2. the rotor for wind-powered electricity generation high-speed permanent magnetic generator according to claim 1 and stator temperature testing circuit, is characterized in that, described platinum resistance thermometer sensor, constant-current source circuit is made up of operational amplifier, voltage-reference, Chip-R and precision resistance; Voltage-reference is connected with the in-phase input end of operational amplifier, and the in-phase input end of operational amplifier is connected with Chip-R with reverse input end, and the output terminal of operational amplifier is connected with precision resistance, composition 1mA constant-current source circuit.
3. the rotor for wind-powered electricity generation high-speed permanent magnetic generator according to claim 2 and stator temperature testing circuit, it is characterized in that, in described platinum resistance thermometer sensor, constant-current source circuit (1), + 12V voltage is connected with the negative pole of the first voltage-reference Z1 through the 7th precision resistance R7, the plus earth AGND of the Z1 of the first voltage-reference, one end of first patch capacitor C1 is connected with the negative pole of the first voltage-reference Z1, one end is connected with the positive pole of the first voltage-reference Z1 in addition, play filter effect, the negative pole of the first voltage-reference Z1 produces the voltage of 2.5V, 2.5V voltage signal enters 3 pins of the first operational amplifier U1A in-phase input end after the 9th Chip-R R9, 2 pins of the first operational amplifier U1A inverting input are connected with one end of the first Chip-R R1, other one end ground connection AGND of the 1st Chip-R R1,2 pins of the inverting input of the first operational amplifier U1A are connected with one end of the second Chip-R R2, and the other end of the second Chip-R R2 is connected with 1 pin of the first operational amplifier U1A output terminal, 1 pin of the first operational amplifier U1A output terminal is connected with one end of the 5th precision resistance R5, other one end of 5th precision resistance R5 is connected with 5 pins of the in-phase input end of the second operational amplifier U1B, 6 pins of the inverting input of the second operational amplifier U1B are connected with 7 pins of the output terminal of the second operational amplifier U1B and reach voltage follow function, 7 pins of the output terminal of the second operational amplifier U1B are connected with one end of the tenth Chip-R R10, other one end of tenth Chip-R R10 is connected with 3 pins of the in-phase input end of the second operational amplifier U1A, 5 pins of the in-phase input end of the second operational amplifier U1B are connected with the anode PT1+ of the platinum resistance thermometer sensor, of stator, produce the electric current of 1mA, + 12V voltage is connected with one end of the 8th precision resistance R8, other one end of 8th precision resistance R8 is connected with the negative pole of the second voltage-reference Z2, the plus earth AGND of the Z2 of the second voltage-reference, one end of second patch capacitor C2 is connected with the negative pole of the second voltage-reference Z2, one end is connected with the positive pole of the second voltage-reference Z2 in addition, play filter effect, the negative pole of the second voltage-reference Z2 produces the voltage of 2.5V, and 2.5V voltage signal enters 10 pins of the 3rd operational amplifier U1C in-phase input end after the 11 Chip-R R11, 9 pins of the 3rd operational amplifier U1C inverting input are connected with one end of the 3rd Chip-R R3, other one end ground connection AGND of the 3rd Chip-R R3,9 pins of the inverting input of the 3rd operational amplifier U1C are connected with one end of the 4th Chip-R R4, and the other end of the 4th Chip-R R4 is connected with 8 pins of the 3rd operational amplifier U1C output terminal, 8 pins of the 3rd operational amplifier U1C output terminal are connected with one end of the 6th precision resistance R6, other one end of 6th precision resistance R6 is connected with 12 pins of the in-phase input end of four-operational amplifier U1D, 13 pins of the inverting input of four-operational amplifier U1D are connected with 14 pins of the output terminal of four-operational amplifier U1D and reach voltage follow function, 14 pins of the output terminal of four-operational amplifier U1D are connected with one end of the 12 Chip-R R12, other one end of 12 Chip-R R12 is connected with 10 pins of the in-phase input end of the 3rd operational amplifier U1C, 5 pins of the in-phase input end of four-operational amplifier U1D are connected with the anode PT2+ of the platinum resistance thermometer sensor, of rotor, produce the electric current of 1mA.
4. the rotor for wind-powered electricity generation high-speed permanent magnetic generator according to claim 1 and stator temperature testing circuit, it is characterized in that, in described filtering circuit (2), the positive pole PT1+ of stator platinum resistance thermometer sensor, is connected with the input anode of stator platinum resistance thermometer sensor, filtering circuit, and the negative pole PT1-of stator platinum resistance thermometer sensor, is connected with the input cathode of stator platinum resistance thermometer sensor, filtering circuit; Stator platinum resistance thermometer sensor, filtering circuit by ten multilayers without lopsided ceramic capacitor: C3, C4, C5, C6, C7, C8, C9, C10, C12, C13 compose in parallel; The positive pole PT1+ of the platinum resistance thermometer sensor, of rotor is connected with the input anode of rotor platinum resistance thermometer sensor, filtering circuit, and the negative pole PT1-of the platinum resistance thermometer sensor, of rotor is connected with the input cathode of rotor platinum resistance thermometer sensor, filtering circuit; Rotor platinum resistance thermometer sensor, filtering circuit by ten multilayers without lopsided ceramic capacitor: C13, C14, C15, C16, C17, C18, C19, C20, C21, C22 compose in parallel.
5. the rotor for wind-powered electricity generation high-speed permanent magnetic generator according to claim 1 and stator temperature testing circuit, it is characterized in that, in described grounding circuit (3), the negative pole PT1-of stator platinum resistance thermometer sensor, is connected with one end of the first voltage lifting resistance R1, and the other end of the first voltage lifting resistance R1 is connected with stator ground AGND1; The negative pole PT2-of rotor platinum resistance thermometer sensor, is connected with one end of the second voltage lifting resistance R2, and the other end of the second voltage lifting resistance R2 is connected with rotor ground AGND2; Stator ground AGND1 is connected with one end of the 3rd Zero-ohm resistor R3, and the other end of the 3rd Zero-ohm resistor R3 is connected with ground AGND, and rotor ground AGND2 is connected with one end of the 4th Zero-ohm resistor R4, and the other end of the 4th Zero-ohm resistor R4 is connected with ground AGND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520488750.8U CN204730957U (en) | 2015-07-08 | 2015-07-08 | For rotor and the stator temperature testing circuit of wind-powered electricity generation high-speed permanent magnetic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520488750.8U CN204730957U (en) | 2015-07-08 | 2015-07-08 | For rotor and the stator temperature testing circuit of wind-powered electricity generation high-speed permanent magnetic generator |
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| Publication Number | Publication Date |
|---|---|
| CN204730957U true CN204730957U (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520488750.8U Expired - Fee Related CN204730957U (en) | 2015-07-08 | 2015-07-08 | For rotor and the stator temperature testing circuit of wind-powered electricity generation high-speed permanent magnetic generator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953944A (en) * | 2016-04-21 | 2016-09-21 | 同济大学 | Estimation method of rotor temperature of electric motor |
| CN107202649A (en) * | 2017-05-02 | 2017-09-26 | 邱翠雯 | A kind of temperature sensor of high-precision wide output voltage |
| CN107525823A (en) * | 2016-06-20 | 2017-12-29 | 新疆金风科技股份有限公司 | Monitor the pilot system of the magnetic pole temperature of permanent-magnetic wind driven generator |
| CN112855410A (en) * | 2021-01-20 | 2021-05-28 | 昆明理工大学 | Hydraulic generator temperature field visual monitoring system and construction method thereof |
-
2015
- 2015-07-08 CN CN201520488750.8U patent/CN204730957U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953944A (en) * | 2016-04-21 | 2016-09-21 | 同济大学 | Estimation method of rotor temperature of electric motor |
| CN107525823A (en) * | 2016-06-20 | 2017-12-29 | 新疆金风科技股份有限公司 | Monitor the pilot system of the magnetic pole temperature of permanent-magnetic wind driven generator |
| CN107525823B (en) * | 2016-06-20 | 2019-11-29 | 新疆金风科技股份有限公司 | Monitor the pilot system of the magnetic pole temperature of permanent-magnetic wind driven generator |
| CN107202649A (en) * | 2017-05-02 | 2017-09-26 | 邱翠雯 | A kind of temperature sensor of high-precision wide output voltage |
| CN107202649B (en) * | 2017-05-02 | 2019-07-26 | 邱翠雯 | A kind of temperature sensor of high-precision wide output voltage |
| CN112855410A (en) * | 2021-01-20 | 2021-05-28 | 昆明理工大学 | Hydraulic generator temperature field visual monitoring system and construction method thereof |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20210708 |