Energy-saving power supply circuit of transformer detection device
By designing an energy-saving power supply circuit for the transformer detection device, the problem of power waste during transformer detection is solved, and efficient use of power and cost reduction are achieved.
Patent Information
- Application Number
- CN202511144845.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-15
- Publication Date
- 2025-10-14
AI Technical Summary
Existing transformer detection devices continuously consume electrical energy during the detection process and are unable to effectively utilize the residual electrical energy when the transformer is powered off, resulting in energy waste and increased electricity costs.
An energy-saving power supply circuit for a transformer detection device is designed. The transformer sampling module samples the current on the primary and secondary sides of the transformer. The microcontroller module controls the power conversion and the energy storage module stores the power, thus achieving rational utilization of power and energy-saving management.
The utility model improves the electric energy utilization rate of the transformer detection device, reduces the electricity cost, and realizes the effective storage and utilization of the residual electric energy during the power outage.
Smart Images
Figure CN120785154A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of transformer detection devices, in particular to an energy-saving power supply circuit of a transformer detection device. Background Art
[0002] The transformer detection device is a device or system used to monitor, diagnose and maintain the operating status of power transformers to ensure their safe, stable and efficient operation. In the existing technology, the transformer detection device generally samples the current on the primary and secondary sides of the transformer to detect the status of the input electrical energy and the status of the output electrical energy, and then judges the status of the transformer and performs power-off protection when the transformer is abnormal. However, during the transformer detection period, the transformer detection device needs to consume electrical energy at all times and cannot take power according to the detection status of the input or output end of the transformer. It is also impossible to reasonably utilize the residual electrical energy of the transformer when the power is cut off, resulting in energy waste and increased electricity costs of the transformer detection device. Therefore, it needs to be improved. Summary of the Invention
[0003] An embodiment of the present invention provides an energy-saving power supply circuit for a transformer detection device to solve the problems raised in the above background technology.
[0004] According to an embodiment of the present invention, there is provided an energy-saving power supply circuit of a transformer detection device, comprising: A transformer sampling module is used to sample the current on the primary and secondary sides of the connected transformer and output a first sampling signal and a second sampling signal respectively, perform signal conversion and signal amplification and filtering on the first sampling signal and the second sampling signal and output a first detection signal and a second detection signal respectively; a microcontrol module connected to the transformer sampling module, the power control module, the power conversion module, and the power processing module, configured to receive a first detection signal and a second detection signal, control the power conversion module to perform power transmission, control the power control module to receive the first sampling signal and control the transformer sampling module to stop processing the first sampling signal when there is no need to sample current on the primary side, control the power control module to receive the second sampling signal and control the transformer sampling module to stop processing the second sampling signal when there is no need to sample current on the secondary side, control the power control module to receive the residual power on the primary and secondary sides when the transformer is powered off, and control the power processing module to perform power superposition and control the power conversion module to stop power transmission when receiving a third detection signal output by the power processing module; The power control module is connected to the transformer sampling module and is used to transform the residual power on the primary side and output the first power, transmit the residual power on the secondary side and output the second power; an electric energy conversion module connected to the transformer sampling module, the electric energy control module, and the energy storage module, configured to rectify and stabilize the first sampling signal or the first electric energy and output a third electric energy, rectify and stabilize the second sampling signal or the second electric energy and output a fourth electric energy, and transmit the third electric energy and the fourth electric energy to the energy storage module; an electric energy processing module connected to the electric energy conversion module and the energy storage module, configured to perform voltage sampling on the third electric energy and the fourth electric energy, and output a third detection signal when the sampled signals are both lower than a set low-voltage threshold, perform electric energy superposition processing on the third electric energy and the fourth electric energy, and output a fifth electric energy; The energy storage module is used to store the third electrical energy, the fourth electrical energy or the fifth electrical energy.
[0005] As a further solution of the present invention: the transformer sampling module includes a transformer interface, an input port, an output port, a first mutual inductor, a second mutual inductor, a first processing device and a second processing device; the microcontroller module includes a first controller; Preferably, the first end of the input port passes through the center of the first transformer to connect to the first end of the primary side of the transformer interface, the second end of the input port is connected to the second end of the primary side of the transformer interface, the first end of the secondary side of the transformer interface passes through the center of the second transformer to connect to the first end of the output port, the second end of the secondary side of the transformer interface is connected to the second end of the output port, the first output end and the second output end of the first transformer are respectively connected to the first input end and the second input end of the first processing device, the output end of the first processing device is connected to the IO1 end of the first controller, the power control end of the first processing device is connected to the IO2 end of the first controller, the first output end and the second output end of the second transformer are respectively connected to the first input end and the second input end of the second processing device, the output end of the second processing device is connected to the IO4 end of the first controller, and the power control end of the second processing device is connected to the IO5 end of the first controller.
[0006] As a further solution of the present invention: the power control module includes a first thyristor and a first transformer; the power conversion module includes a second thyristor and a third thyristor; Preferably, one end of the first thyristor is connected to the first end of the primary side of the transformer interface, the other end of the first thyristor is connected to the first end of the primary side of the first transformer, the second end of the primary side of the first transformer is connected to the second end of the primary side of the transformer interface, the first end and the second end of the secondary side of the first transformer are respectively connected to one end of the second thyristor and one end of the third thyristor, the other end of the second thyristor and the other end of the third thyristor are respectively connected to the second output end and the first output end of the first mutual inductor, the control end of the second thyristor is connected to the control end of the third thyristor and the IO2 end of the first controller, and the control end of the first thyristor is connected to the IO3 end of the first controller.
[0007] As a further solution of the present invention: the power control module further includes a fourth thyristor; the power conversion module further includes a fifth thyristor and a sixth thyristor; Preferably, one end of the fourth thyristor is connected to the first end of the secondary side of the transformer interface, the other end of the fourth thyristor is connected to the first end of the fifth thyristor, the first end of the sixth thyristor is connected to the geothermal end of the secondary side of the transformer interface, the geothermal end of the fifth thyristor and the second end of the sixth thyristor are respectively connected to the first output end and the second output end of the first mutual inductor, the control end of the fourth thyristor is connected to the IO3 end of the first controller, and the control end of the fifth thyristor is connected to the control end of the sixth thyristor and the IO5 end of the first controller.
[0008] As a further solution of the present invention: the power conversion module further includes a first conversion device, a second conversion device, a second capacitor, a first capacitor, a first power tube and a second power tube; the energy storage module includes an energy storage device; Preferably, the first input end and the second input end of the first conversion device are respectively connected to the first end and the second end of the secondary side of the first transformer, the first input end and the second input end of the second conversion device are respectively connected to the first end of the fifth thyristor and the first end of the sixth thyristor, the first output end of the first conversion device is connected to the drain of the first power tube and is connected to the second output end of the first conversion device and the second end of the energy storage device through the second capacitor, the second output end of the second conversion device and one end of the first capacitor, the other end of the first capacitor is connected to the drain of the second power tube and the first output end of the second conversion device, the source of the first power tube is connected to the source of the second power tube and the first end of the energy storage device, and the gate of the first power tube is connected to the IO6 end and IO7 end of the first controller respectively.
[0009] As a further solution of the present invention: the power processing module includes a third capacitor, a fourth power tube and a third power tube; Preferably, one end of the third capacitor is connected to the first output end of the second conversion device, the other end of the third capacitor is connected to the drain of the fourth power tube and the source of the third power tube, the source of the fourth power tube is connected to the first end of the energy storage device, the drain of the third power tube is connected to the first output end of the first conversion device, and the gate of the third power tube is connected to the gate of the fourth power tube and the IO9 end of the first controller.
[0010] As a further solution of the present invention: the power processing module further includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first low voltage detection device, a second low voltage detection device and a first logic device; Preferably, one end of the first resistor is connected to the first output end of the first conversion equipment, the other end of the first resistor is connected to the input end of the first low-voltage detection device and is connected to the second output end of the first conversion device through the second resistor, one end of the third resistor is connected to the first output end of the second conversion device, the other end of the third resistor is connected to the input end of the second low-voltage detection device and is connected to the second output end of the second conversion device through the fourth resistor, the output end of the first low-voltage detection device and the output end of the second low-voltage detection device are respectively connected to the A end and the B end of the first logic device, and the Y end of the first logic device is connected to the IO8 end of the first controller.
[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the energy-saving power supply circuit of the transformer detection device of the present invention can perform current sampling and signal processing on the primary and secondary sides of the transformer by the transformer sampling module, and when there is no need to perform primary side current sampling or secondary side current sampling, the micro-control module controls the power conversion module to take power and perform power conversion processing on the sampled signal, and the energy storage module stores it; when the transformer is powered off, the micro-control module controls the power control module to transmit and transform the residual electric energy on the primary and secondary sides, and then the power conversion module performs power conversion processing and stores it by the energy storage module; when the power processing module detects that the electric energy output by the power conversion module is lower than the low-voltage threshold, the output electric energy will be superimposed to meet the charging control of the energy storage module and improve the energy saving performance of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0013] Figure 1 A schematic block diagram of an energy-saving power supply circuit of a transformer detection device provided by an embodiment of the present invention.
[0014] Figure 2 A circuit diagram of an energy-saving power supply circuit of a transformer detection device provided by an embodiment of the present invention.
[0015] Figure 3 This is a first circuit diagram of the power processing module provided by an embodiment of the present invention.
[0016] Figure 4 This is a second circuit diagram of the power processing module provided by an embodiment of the present invention. DETAILED DESCRIPTION
[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0018] In one embodiment, see Figure 1 , an energy-saving power supply circuit for a transformer detection device, comprising: Transformer sampling module 1, used to sample the current on the primary side and secondary side of the connected transformer and output a first sampling signal and a second sampling signal respectively, perform signal conversion and signal amplification and filtering on the first sampling signal and the second sampling signal and output a first detection signal and a second detection signal respectively; The micro-control module 2 is connected to the transformer sampling module 1, the power control module 3, the power conversion module 4 and the power processing module 5, and is used to receive the first detection signal and the second detection signal, control the power conversion module 4 to perform power transmission, and when there is no need to sample the current on the primary side, control the power control module 3 to receive the first sampling signal and control the transformer sampling module 1 to stop processing the first sampling signal; when there is no need to sample the current on the secondary side, control the power control module 3 to receive the second sampling signal and control the transformer sampling module 1 to stop processing the second sampling signal; when the transformer is powered off, control the power control module 3 to receive the residual power on the primary and secondary sides, and when receiving the third detection signal output by the power processing module 5, control the power processing module 5 to perform power superposition and control the power conversion module 4 to stop power transmission; The power control module 3 is connected to the transformer sampling module 1 and is used to transform the residual power on the primary side and output the first power, transmit the residual power on the secondary side and output the second power; The power conversion module 4 is connected to the transformer sampling module 1, the power control module 3 and the energy storage module 6, and is used to rectify and stabilize the first sampling signal or the first electric energy and output the third electric energy, rectify and stabilize the second sampling signal or the second electric energy and output the fourth electric energy, and transmit the third electric energy and the fourth electric energy to the energy storage module 6; The power processing module 5 is connected to the power conversion module 4 and the energy storage module 6, and is used to perform voltage sampling on the third power and the fourth power, and when the sampled signals are both lower than the set low-voltage threshold, output a third detection signal, perform power superposition processing on the third power and the fourth power, and output a fifth power; The energy storage module 6 is used to store the third electrical energy, the fourth electrical energy or the fifth electrical energy.
[0019] In a specific embodiment, the transformer sampling module 1 can adopt a transformer sampling circuit composed of a current transformer, a transformer interface, a processing device, etc., which can perform current sampling on the primary side electric energy and the secondary side electric energy of the connected transformer, and perform signal conversion and signal amplification and filtering processing on the sampled signals; the micro-control module 2 can adopt a micro-control circuit composed of a single-chip microcomputer, which integrates many components such as an arithmetic unit, a controller, a memory, and an input and output device to realize functions such as signal processing, data storage, module control, and timing control; the power control module 3 can adopt a power control circuit composed of a transformer and a thyristor, which can control the transmission of power and perform voltage regulation processing. The above-mentioned power conversion module 4 can adopt a power conversion circuit composed of a conversion device, a field effect transistor, a capacitor, etc., which can control the transmission of the signal, and rectify and stabilize the input signal or power, and control the transmission state of the power to supply power to the energy storage module 6; the above-mentioned power processing module 5 can adopt a power processing circuit composed of a field effect transistor, a capacitor, a low-voltage detection device, a logic device, etc., which can perform voltage sampling and low-voltage judgment on the power output of the power conversion module 4, and output a high-level state signal, i.e., a third detection signal, when the power output of the power conversion module 4 is all in a low-voltage state; the above-mentioned energy storage module 6 can adopt an energy storage circuit composed of an energy storage device to perform energy storage work.
[0020] In another embodiment, see Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The transformer sampling module 1 includes a transformer interface, an input port, an output port, a first transformer CT1, a second transformer CT2, a first processing device and a second processing device; the microcontroller module 2 includes a first controller U1; Specifically, the first end of the input port passes through the center of the first transformer CT1 and is connected to the first end of the primary side of the transformer interface, the second end of the input port is connected to the second end of the primary side of the transformer interface, the first end of the secondary side of the transformer interface passes through the center of the second transformer CT2 and is connected to the first end of the output port, the second end of the secondary side of the transformer interface is connected to the second end of the output port, the first output end and the second output end of the first transformer CT1 are respectively connected to the first input end and the second input end of the first processing device, the output end of the first processing device is connected to the IO1 end of the first controller U1, the power control end of the first processing device is connected to the IO2 end of the first controller U1, the first output end and the second output end of the second transformer CT2 are respectively connected to the first input end and the second input end of the second processing device, the output end of the second processing device is connected to the IO4 end of the first controller U1, and the power control end of the second processing device is connected to the IO5 end of the first controller U1.
[0021] In specific embodiments, the input port accesses alternating current power, the primary side of the transformer interface is connected to the primary side of the transformer, the secondary side of the transformer interface is connected to the secondary side of the transformer, and the output port is connected to the electrical equipment; the first and second transformers CT1 and CT2 can be current transformers; the first processing device can be composed of an operational amplifier, a resistor, and a capacitor, and can convert a current signal into a voltage signal and perform signal amplification and filtering processing on the voltage signal; when the IO2 terminal of the first controller U1 outputs a high-level signal, the first processing device can be controlled to stop working; specifically, a high level can be provided to the power supply control terminal of the first processing device, the power supply voltage of the operational amplifier is pulled down, the operational amplifier stops working, and then the signal processing work is stopped; the circuit composition structure of the second processing device is the same as that of the first processing device, and will not be described here; and the first controller U1 can be an STM32 single-chip microcomputer.
[0022] Further, the electric energy control module 3 comprises a first thyristor S1 and a first transformer B1; the electric energy conversion module 4 comprises a second thyristor S2 and a third thyristor S3. Specifically, one end of the first thyristor S1 is connected to the first end of the primary side of the transformer interface, the other end of the first thyristor S1 is connected to the first end of the primary side of the first transformer B1, the second end of the primary side of the first transformer B1 is connected to the second end of the primary side of the transformer interface, the first and second ends of the secondary side of the first transformer B1 are respectively connected to one end of the second thyristor S2 and one end of the third thyristor S3, the other end of the second thyristor S2 and the other end of the third thyristor S3 are respectively connected to the second output terminal and the first output terminal of the first transformer CT1, the control terminal of the second thyristor S2 is connected to the control terminal of the third thyristor S3 and the IO2 terminal of the first controller U1, and the control terminal of the first thyristor S1 is connected to the IO3 terminal of the first controller U1.
[0023] In specific embodiments, the first, second, and third thyristors S1, S2, and S3 can be bidirectional thyristors.
[0024] Further, the electric energy control module 3 further comprises a fourth thyristor S4; the electric energy conversion module 4 further comprises a fifth thyristor S5 and a sixth thyristor S6. Specifically, one end of the fourth thyristor S4 is connected to the first end of the secondary side of the transformer interface, the other end of the fourth thyristor S4 is connected to the first end of the fifth thyristor S5, the first end of the sixth thyristor S6 is connected to the geothermal end of the secondary side of the transformer interface, the geothermal end of the fifth thyristor S5 and the second end of the sixth thyristor S6 are respectively connected to the first and second output terminals of the first transformer CT1, the control terminal of the fourth thyristor S4 is connected to the IO3 terminal of the first controller U1, and the control terminal of the fifth thyristor S5 is connected to the control terminal of the sixth thyristor S6 and the IO5 terminal of the first controller U1.
[0025] In a specific embodiment, the fourth thyristor S4 , the fifth thyristor S5 and the sixth thyristor S6 may all be bidirectional thyristors.
[0026] Furthermore, the electric energy conversion module 4 further includes a first conversion device, a second conversion device, a second capacitor C2, a first capacitor C1, a first power tube Q1 and a second power tube Q2; the energy storage module 6 includes an energy storage device; Specifically, the first input end and the second input end of the first conversion device are respectively connected to the first end and the second end of the secondary side of the first transformer B1, the first input end and the second input end of the second conversion device are respectively connected to the first end of the fifth thyristor S5 and the first end of the sixth thyristor S6, the first output end of the first conversion device is connected to the drain of the first power tube Q1 and is connected to the second output end of the first conversion device and the second end of the energy storage device through the second capacitor C2, the second output end of the second conversion device and one end of the first capacitor C1, the other end of the first capacitor C1 is connected to the drain of the second power tube Q2 and the first output end of the second conversion device, the source of the first power tube Q1 is connected to the source of the second power tube Q2 and the first end of the energy storage device, and the gate of the first power tube Q1 and the gate of the second power tube Q2 are respectively connected to the IO6 end and IO7 end of the first controller U1.
[0027] In a specific embodiment, the above-mentioned first conversion device and the second conversion device can both be composed of a rectifier and a voltage stabilizer, which rectify and stabilize the input signal or electric energy. The voltage stabilizer can perform wide voltage input and voltage stabilization, and the voltages output by the first conversion device and the second conversion device are equal and meet the charging voltage of the energy storage device; the above-mentioned first power tube Q1 and the second power tube Q2 can both use N-channel field effect tubes; the above-mentioned energy storage device can use a battery, and the electric energy stored in the energy storage device can power the transformer sampling module 1, the electric energy conversion module 4 and the electric energy processing module 5, which will not be repeated here.
[0028] Furthermore, the power processing module 5 includes a third capacitor C3, a fourth power tube Q4 and a third power tube Q3; Specifically, one end of the third capacitor C3 is connected to the first output end of the second conversion device, the other end of the third capacitor C3 is connected to the drain of the fourth power tube Q4 and the source of the third power tube Q3, the source of the fourth power tube Q4 is connected to the first end of the energy storage device, the drain of the third power tube Q3 is connected to the first output end of the first conversion device, and the gate of the third power tube Q3 is connected to the gate of the fourth power tube Q4 and the IO9 terminal of the first controller U1.
[0029] In a specific embodiment, both the fourth power tube Q4 and the third power tube Q3 can be N-channel field effect tubes.
[0030] Furthermore, the power processing module 5 further includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first low voltage detection device, a second low voltage detection device and a first logic device J1; Specifically, one end of the first resistor R1 is connected to the first output end of the first conversion equipment, the other end of the first resistor R1 is connected to the input end of the first low voltage detection device and is connected to the second output end of the first conversion device through the second resistor R2, one end of the third resistor R3 is connected to the first output end of the second conversion device, the other end of the third resistor R3 is connected to the input end of the second low voltage detection device and is connected to the second output end of the second conversion device through the fourth resistor R4, the output end of the first low voltage detection device and the output end of the second low voltage detection device are respectively connected to the A end and the B end of the first logic device J1, and the Y end of the first logic device J1 is connected to the IO8 end of the first controller U1.
[0031] In a specific embodiment, the first low voltage detection device and the second low voltage detection device can be composed of a reference power supply and a comparator, and the reference power supply provides a low voltage threshold for low voltage detection processing; the first logic device J1 can be an AND gate.
[0032] In the energy-saving power supply circuit of a transformer detection device of the present embodiment, the transformer connected to the AC power transformer interface by the input port transforms the AC power, and then transmits the processed power to the connected electrical equipment by the output port. The first transformer CT1 samples the current of the primary side of the transformer connected to the transformer interface and outputs a first sampling signal. Similarly, the second transformer CT2 samples the current of the secondary side of the transformer and outputs a second sampling signal. The first processing device and the second processing device respectively perform signal conversion and signal amplification and filtering on the first sampling signal and the second sampling signal, and the output end of the first processing device and the output end of the second processing device respectively output the first detection signal and the second detection signal. The signal is received by the IO1 and IO2 terminals of the first controller U1. When there is no need to sample the current on the primary side, the IO2 terminal of the first controller U1 will control the second thyristor S2 and the third thyristor S3 to conduct, control the first processing device to stop working, and the first sampling signal will be transmitted to the first conversion device through the second thyristor S2 and the third thyristor S3. Similarly, when there is no need to sample the current on the secondary side of the transformer, the IO5 terminal of the first controller U1 will control the second processing device to stop working, control the fifth thyristor S5 and the sixth thyristor S6 to conduct, and transmit the second sampling signal. When the transformer is powered off, the IO3 terminal of the first controller U1 controls the first thyristor S1 and the fourth thyristor S4 to conduct, and the first transformer B1 can The residual electric energy on the primary side of the transformer connected to the transformer interface is transformed and the first electric energy is output. The fourth thyristor S4 transmits the residual electric energy on the secondary side of the transformer and outputs the second electric energy. The first sampling signal or the first electric energy is rectified and stabilized by the first conversion device to output the third electric energy. The second sampling signal or the second electric energy is rectified and stabilized by the second conversion device to output the fourth electric energy. The IO6 end of the first controller U1 controls the first power tube Q1 to be turned on, and the IO7 end of the first controller U1 controls the second power tube Q2 to be turned on, so that the third electric energy or the fourth electric energy is transmitted to the energy storage device for storage. At the same time, the first resistor R1 and the second resistor R2 perform voltage sampling on the third electric energy output by the first changing device, and the first low-voltage The voltage detection device performs low voltage detection, the third resistor R3 and the fourth resistor R4 perform voltage sampling on the fourth electric energy output by the second conversion device, and the second low voltage detection device performs low voltage detection. When the third electric energy and the fourth electric energy are both low voltage, the first logic device J1 outputs a third detection signal and when the third detection signal is received by the IO8 terminal of the first controller U1, the first controller U1 stops controlling the first power tube Q1 and the second power tube Q2, and at the same time, the IO9 terminal of the first controller U1 controls the third power tube Q3 and the fourth power tube Q4 to be turned on, so that the third capacitor C3 stores the third electric energy, and the fourth electric energy stored by the first electric energy is subjected to electric energy superposition processing to output the fifth electric energy, and the fifth electric energy is transmitted to the energy storage device by the fourth power tube Q4.
[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.
[0034] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
Claims
1. An energy-saving power supply circuit for a transformer detection device, characterized in that: The circuit includes: A transformer sampling module is used to sample the current on the primary and secondary sides of the connected transformer and output a first sampling signal and a second sampling signal respectively, perform signal conversion and signal amplification and filtering on the first sampling signal and the second sampling signal and output a first detection signal and a second detection signal respectively; a microcontrol module connected to the transformer sampling module, the power control module, the power conversion module, and the power processing module, configured to receive a first detection signal and a second detection signal, control the power conversion module to perform power transmission, control the power control module to receive the first sampling signal and control the transformer sampling module to stop processing the first sampling signal when there is no need to sample current on the primary side, control the power control module to receive the second sampling signal and control the transformer sampling module to stop processing the second sampling signal when there is no need to sample current on the secondary side, control the power control module to receive the residual power on the primary and secondary sides when the transformer is powered off, and control the power processing module to perform power superposition and control the power conversion module to stop power transmission when receiving a third detection signal output by the power processing module; The power control module is connected to the transformer sampling module and is used to transform the residual power on the primary side and output the first power, transmit the residual power on the secondary side and output the second power; an electric energy conversion module connected to the transformer sampling module, the electric energy control module, and the energy storage module, configured to rectify and stabilize the first sampling signal or the first electric energy and output a third electric energy, rectify and stabilize the second sampling signal or the second electric energy and output a fourth electric energy, and transmit the third electric energy and the fourth electric energy to the energy storage module; an electric energy processing module connected to the electric energy conversion module and the energy storage module, configured to perform voltage sampling on the third electric energy and the fourth electric energy, and output a third detection signal when the sampled signals are both lower than a set low-voltage threshold, perform electric energy superposition processing on the third electric energy and the fourth electric energy, and output a fifth electric energy; The energy storage module is used to store the third electrical energy, the fourth electrical energy or the fifth electrical energy.
2. The energy-saving power supply circuit of a transformer detection device according to claim 1, characterized in that: The transformer sampling module includes a transformer interface, an input port, an output port, a first mutual inductor, a second mutual inductor, a first processing device and a second processing device; the microcontroller module includes a first controller; The first end of the input port passes through the center of the first transformer and is connected to the first end of the primary side of the transformer interface, the second end of the input port is connected to the second end of the primary side of the transformer interface, the first end of the secondary side of the transformer interface passes through the center of the second transformer and is connected to the first end of the output port, the second end of the secondary side of the transformer interface is connected to the second end of the output port, the first output end and the second output end of the first transformer are respectively connected to the first input end and the second input end of the first processing device, the output end of the first processing device is connected to the IO1 end of the first controller, the power control end of the first processing device is connected to the IO2 end of the first controller, the first output end and the second output end of the second transformer are respectively connected to the first input end and the second input end of the second processing device, the output end of the second processing device is connected to the IO4 end of the first controller, and the power control end of the second processing device is connected to the IO5 end of the first controller.
3. The energy-saving power supply circuit of a transformer detection device according to claim 2, characterized in that: The power control module includes a first thyristor and a first transformer; the power conversion module includes a second thyristor and a third thyristor; One end of the first thyristor is connected to the first end of the primary side of the transformer interface, the other end of the first thyristor is connected to the first end of the primary side of the first transformer, the second end of the primary side of the first transformer is connected to the second end of the primary side of the transformer interface, the first end and the second end of the secondary side of the first transformer are respectively connected to one end of the second thyristor and one end of the third thyristor, the other end of the second thyristor and the other end of the third thyristor are respectively connected to the second output end and the first output end of the first mutual inductor, the control end of the second thyristor is connected to the control end of the third thyristor and the IO2 end of the first controller, and the control end of the first thyristor is connected to the IO3 end of the first controller.
4. The energy-saving power supply circuit of a transformer detection device according to claim 3, characterized in that: The power control module further includes a fourth thyristor; the power conversion module further includes a fifth thyristor and a sixth thyristor; One end of the fourth thyristor is connected to the first end of the secondary side of the transformer interface, the other end of the fourth thyristor is connected to the first end of the fifth thyristor, the first end of the sixth thyristor is connected to the geothermal end of the secondary side of the transformer interface, the geothermal end of the fifth thyristor and the second end of the sixth thyristor are respectively connected to the first output end and the second output end of the first mutual inductor, the control end of the fourth thyristor is connected to the IO3 end of the first controller, and the control end of the fifth thyristor is connected to the control end of the sixth thyristor and the IO5 end of the first controller.
5. The energy-saving power supply circuit of a transformer detection device according to claim 4, characterized in that: The electric energy conversion module further includes a first conversion device, a second conversion device, a second capacitor, a first capacitor, a first power tube and a second power tube; the energy storage module includes an energy storage device; The first input end and the second input end of the first conversion device are respectively connected to the first end and the second end of the secondary side of the first transformer, the first input end and the second input end of the second conversion device are respectively connected to the first end of the fifth thyristor and the first end of the sixth thyristor, the first output end of the first conversion device is connected to the drain of the first power tube and is connected to the second output end of the first conversion device and the second end of the energy storage device through the second capacitor, the second output end of the second conversion device and one end of the first capacitor, the other end of the first capacitor is connected to the drain of the second power tube and the first output end of the second conversion device, the source of the first power tube is connected to the source of the second power tube and the first end of the energy storage device, and the gate of the first power tube is connected to the IO6 end and the IO7 end of the first controller respectively.
6. The energy-saving power supply circuit of a transformer detection device according to claim 5, characterized in that: The power processing module includes a third capacitor, a fourth power tube and a third power tube; One end of the third capacitor is connected to the first output end of the second conversion device, the other end of the third capacitor is connected to the drain of the fourth power tube and the source of the third power tube, the source of the fourth power tube is connected to the first end of the energy storage device, the drain of the third power tube is connected to the first output end of the first conversion device, and the gate of the third power tube is connected to the gate of the fourth power tube and the IO9 terminal of the first controller.
7. The energy-saving power supply circuit of a transformer detection device according to claim 6, characterized in that: The power processing module further includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first low voltage detection device, a second low voltage detection device and a first logic device; One end of the first resistor is connected to the first output end of the first conversion equipment, the other end of the first resistor is connected to the input end of the first low voltage detection device and is connected to the second output end of the first conversion device through the second resistor, one end of the third resistor is connected to the first output end of the second conversion device, the other end of the third resistor is connected to the input end of the second low voltage detection device and is connected to the second output end of the second conversion device through the fourth resistor, the output end of the first low voltage detection device and the output end of the second low voltage detection device are respectively connected to the A end and the B end of the first logic device, and the Y end of the first logic device is connected to the IO8 end of the first controller.