CN219532316U - Temperature detection circuit for transformer - Google Patents
Temperature detection circuit for transformer Download PDFInfo
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- CN219532316U CN219532316U CN202320225917.6U CN202320225917U CN219532316U CN 219532316 U CN219532316 U CN 219532316U CN 202320225917 U CN202320225917 U CN 202320225917U CN 219532316 U CN219532316 U CN 219532316U
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- operational amplifier
- temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model discloses a temperature detection circuit for a transformer, which is used for detecting the working temperature of the transformer and comprises a temperature acquisition circuit, an operational amplifier circuit, a time base circuit and an alarm circuit, wherein the output end of the temperature acquisition circuit is electrically connected with the input end of the operational amplifier circuit, the output end of the operational amplifier circuit is electrically connected with the input end of the time base circuit, and the output end of the time base circuit is electrically connected with the input end of the alarm circuit. The temperature detection circuit for the transformer disclosed by the utility model is used for collecting the working temperature of the transformer in real time through the temperature collection circuit and transmitting the temperature collection data to the operational amplifier circuit for comparison, and when the temperature threshold value is reached, the base circuit triggers the alarm circuit to alarm so as to remind workers, and the temperature detection circuit has the advantages of high detection precision, high safety, convenience in operation and the like.
Description
Technical Field
The utility model belongs to the technical field of temperature detection, and particularly relates to a temperature detection circuit for a transformer.
Background
When the transformer works, sometimes, the volume of the transformer is small, the PCB and the line Bao Wensheng are fast, and under the condition of high working condition, temperature control is not performed, so that the transformer is possibly burnt or fried, and therefore, the real-time detection of the working temperature of the transformer is particularly important.
Disclosure of Invention
The utility model mainly aims to provide a temperature detection circuit for a transformer, which is used for collecting the working temperature of the transformer in real time through a temperature collection circuit and transmitting temperature collection data to an operational amplifier circuit for comparison, and when the temperature threshold is reached, a base circuit triggers an alarm circuit to alarm so as to remind workers.
In order to achieve the above object, the present utility model provides a temperature detection circuit for a transformer, for detecting an operating temperature of the transformer, including a temperature acquisition circuit, an operational amplifier circuit, a time base circuit and an alarm circuit, wherein an output end of the temperature acquisition circuit is electrically connected with an input end of the operational amplifier circuit, an output end of the operational amplifier circuit is electrically connected with an input end of the time base circuit, and an output end of the time base circuit is electrically connected with an input end of the alarm circuit, wherein:
the temperature acquisition circuit comprises a temperature sensor U1 (arranged on a transformer), the operational amplifier circuit comprises an operational amplifier U2, a resistor R1, a rheostat R3 and a resistor R4, a first end (2 pins) of the temperature sensor U1 is electrically connected with an anode input end of the operational amplifier U2, a second end (3 pins) of the operational amplifier U1 is electrically connected with a cathode input end of the operational amplifier U2 through a resistor R5, one path of the cathode input end of the operational amplifier U2 is electrically connected with an anode of a power supply B through the rheostat R3 and the resistor R1, and the other path of the cathode input end of the operational amplifier U2 is electrically connected with a cathode of the power supply B through the rheostat R3 and the resistor R4;
the time base circuit comprises a processor U3, the alarm circuit comprises a voice chip U4 and a loudspeaker L, the output end of the operational amplifier U2 is electrically connected with the input end (2 pins) of the processor U3, the output end (3 pins) of the processor U3 is electrically connected with the input end (1 pin) of the voice chip U4 through a resistor R8, the output end (6 pins) of the voice chip U4 is electrically connected with the base electrode of the triode Q1, and the collector electrode of the triode Q1 is electrically connected with the loudspeaker L.
As a further preferable technical solution of the foregoing technical solution, a resistor R2 and a capacitor C1 are connected between the second end and the third end of the temperature sensor U1, and the third end (1 pin) of the temperature sensor U1 is connected with the positive electrode of the power supply B, the second end of the temperature sensor U1 is connected with the resistor R5 through the common connection end of the varistor R3 and the resistor R4, and one end of the resistor R5 away from the op-amp U2 is electrically connected with the negative electrode of the power supply B through the capacitor C2.
As a further preferable technical scheme of the above technical scheme, the output end of the op-amp U2 is electrically connected with the positive electrode of the power supply B through a resistor R6, one path of the 6 pins (7 pins) of the processor U3 is electrically connected with the positive electrode of the power supply B through a resistor R7, and the other path of the 6 pins of the processor U3 is electrically connected with the negative electrode of the power supply B through a capacitor C3.
As a further preferable aspect of the foregoing aspect, an end of the speaker L away from the triode Q1 is connected to a positive electrode of the power supply B and an emitter of the triode Q1 is connected to a negative electrode of the power supply B.
As a further preferable embodiment of the above-described embodiment, the 1 pin of the processor U3 is connected to the negative electrode of the power supply B and the 5 pin of the processor U3 is connected to the negative electrode of the power supply B through the capacitor C4.
Drawings
Fig. 1 is a schematic diagram of a temperature detection circuit for a transformer according to the present utility model.
Fig. 2 is a specific connection diagram of a temperature detection circuit for a transformer according to the present utility model.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.
The utility model discloses a temperature detection circuit for a transformer, and specific embodiments of the utility model are further described below with reference to preferred embodiments.
In the embodiments of the present utility model, it is noted by those skilled in the art that the transformer and the like to which the present utility model relates can be regarded as the prior art.
Preferred embodiments.
As shown in fig. 1-2, the utility model discloses a temperature detection circuit for a transformer, which is used for detecting the working temperature of the transformer, and comprises a temperature acquisition circuit, an operational amplifier circuit, a time base circuit and an alarm circuit, wherein the output end of the temperature acquisition circuit is electrically connected with the input end of the operational amplifier circuit, the output end of the operational amplifier circuit is electrically connected with the input end of the time base circuit, and the output end of the time base circuit is electrically connected with the input end of the alarm circuit, wherein:
the temperature acquisition circuit comprises a temperature sensor U1 (arranged on a transformer), the operational amplifier circuit comprises an operational amplifier U2, a resistor R1, a rheostat R3 and a resistor R4, a first end (2 pins) of the temperature sensor U1 is electrically connected with an anode input end of the operational amplifier U2, a second end (3 pins) of the operational amplifier U1 is electrically connected with a cathode input end of the operational amplifier U2 through a resistor R5, one path of the cathode input end of the operational amplifier U2 is electrically connected with an anode of a power supply B through the rheostat R3 and the resistor R1, and the other path of the cathode input end of the operational amplifier U2 is electrically connected with a cathode of the power supply B through the rheostat R3 and the resistor R4;
the time base circuit comprises a processor U3, the alarm circuit comprises a voice chip U4 and a loudspeaker L, the output end of the operational amplifier U2 is electrically connected with the input end (2 pins) of the processor U3, the output end (3 pins) of the processor U3 is electrically connected with the input end (1 pin) of the voice chip U4 through a resistor R8, the output end (6 pins) of the voice chip U4 is electrically connected with the base electrode of the triode Q1, and the collector electrode of the triode Q1 is electrically connected with the loudspeaker L.
Specifically, a resistor R2 and a capacitor C1 are connected between the second end and the third end of the temperature sensor U1, the third end (1 pin) of the temperature sensor U1 is connected with the positive electrode of the power supply B, the second end of the temperature sensor U1 is connected with the resistor R5 through the common connection end of the varistor R3 and the resistor R4, and one end of the resistor R5 away from the op-amp U2 is electrically connected with the negative electrode of the power supply B through the capacitor C2.
More specifically, the output end of the operational amplifier U2 is electrically connected to the positive electrode of the power supply B through a resistor R6, one path of the 6 pins (7 pins) of the processor U3 is electrically connected to the positive electrode of the power supply B through a resistor R7, and the other path of the 6 pins of the processor U3 is electrically connected to the negative electrode of the power supply B through a capacitor C3.
Further, one end of the speaker L far away from the triode Q1 is connected to the positive electrode of the power supply B, and the emitter of the triode Q1 is connected to the negative electrode of the power supply B.
Further, pin 1 of the processor U3 is connected to the negative pole of the power supply B and pin 5 of the processor U3 is connected to the negative pole of the power supply B through a capacitor C4.
The principle of the utility model is as follows:
the temperature sensor U1 arranged on the transformer detects the working temperature in real time, changes the temperature change into voltage signal change, then inputs the voltage signal change into the operational amplifier U2, compares the voltage signal with a reference voltage (namely a reference temperature threshold) formed by the resistor R1, the rheostat R3 and the resistor R4, when the input voltage signal is larger than the reference voltage, the operational amplifier U2 outputs a low level to the processor U3 (when the input voltage signal is smaller than the reference voltage, the operational amplifier U2 outputs a high level, so that the processor U3 is in a reset state, the processor U3 outputs a low level, the voice chip U4 does not work, the loudspeaker does not sound), the processor U3 outputs a high level, the voice chip U4 is powered on to work, and then the loudspeaker alarms.
It should be noted that technical features such as a transformer and the like related to the present application should be considered as the prior art, and specific structures, working principles, and control modes and spatial arrangement modes possibly related to the technical features should be selected conventionally in the art, and should not be considered as the utility model point of the present application, and the present application is not further specifically developed in detail.
Modifications of the embodiments described above, or equivalents of some of the features may be made by those skilled in the art, and any modifications, equivalents, improvements or etc. within the spirit and principles of the present utility model are intended to be included within the scope of the present utility model.
Claims (5)
1. The utility model provides a temperature detection circuit for transformer for detect the operating temperature of transformer, its characterized in that includes temperature acquisition circuit, fortune amplifying circuit, time base circuit and alarm circuit, the output of temperature acquisition circuit with fortune amplifying circuit's input electric connection and fortune amplifying circuit's output with time base circuit's input electric connection, time base circuit's output with alarm circuit's input electric connection, wherein:
the temperature acquisition circuit comprises a temperature sensor U1, the operational amplifier circuit comprises an operational amplifier U2, a resistor R1, a rheostat R3 and a resistor R4, a first end of the temperature sensor U1 is electrically connected with an anode input end of the operational amplifier U2, a second end of the operational amplifier U1 is electrically connected with a cathode input end of the operational amplifier U2 through a resistor R5, one path of the cathode input end of the operational amplifier U2 is electrically connected with an anode of a power supply B through the rheostat R3 and the resistor R1, and the other path of the cathode input end of the operational amplifier U2 is electrically connected with a cathode of the power supply B through the rheostat R3 and the resistor R4;
the time base circuit comprises a processor U3, the alarm circuit comprises a voice chip U4 and a loudspeaker L, the output end of the operational amplifier U2 is electrically connected with the input end of the processor U3, the output end of the processor U3 is electrically connected with the input end of the voice chip U4 through a resistor R8, the output end of the voice chip U4 is electrically connected with the base electrode of a triode Q1, and the collector electrode of the triode Q1 is electrically connected with the loudspeaker L.
2. A temperature detection circuit for a transformer according to claim 1, wherein a resistor R2 and a capacitor C1 are connected between the second end and the third end of the temperature sensor U1, and the third end of the temperature sensor U1 is connected to the positive electrode of the power supply B, the second end of the temperature sensor U1 is connected to the resistor R5 through the common connection end of the varistor R3 and the resistor R4, and the end of the resistor R5 away from the op-amp U2 is further electrically connected to the negative electrode of the power supply B through the capacitor C2.
3. The temperature detection circuit for a transformer according to claim 2, wherein an output end of the operational amplifier U2 is electrically connected to an anode of the power supply B through a resistor R6, one path of the 6 pins of the processor U3 is electrically connected to the anode of the power supply B through a resistor R7, and the other path of the 6 pins of the processor U3 is electrically connected to a cathode of the power supply B through a capacitor C3.
4. A temperature detection circuit for a transformer according to claim 3, wherein an end of the speaker L remote from the transistor Q1 is connected to a positive pole of a power source B and an emitter of the transistor Q1 is connected to a negative pole of the power source B.
5. A temperature detection circuit for a transformer according to claim 4, wherein the 1 pin of the processor U3 is connected to the negative pole of the power supply B and the 5 pin of the processor U3 is connected to the negative pole of the power supply B via a capacitor C4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320225917.6U CN219532316U (en) | 2023-02-09 | 2023-02-09 | Temperature detection circuit for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320225917.6U CN219532316U (en) | 2023-02-09 | 2023-02-09 | Temperature detection circuit for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219532316U true CN219532316U (en) | 2023-08-15 |
Family
ID=87586942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320225917.6U Active CN219532316U (en) | 2023-02-09 | 2023-02-09 | Temperature detection circuit for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219532316U (en) |
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2023
- 2023-02-09 CN CN202320225917.6U patent/CN219532316U/en active Active
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