Detection circuit of energy taking device

Abstract

The utility model discloses a detection circuit of an energy taking device, and the detection circuit comprises an integrating circuit, one end of which is electrically connected with the energy taking device; one end of the first comparison circuit is electrically connected with the other end of the integrating circuit; one end of the second comparison circuit is electrically connected with the other end of the energy taking device; and the controller is electrically connected with the other end of the first comparison circuit and the other end of the second comparison circuit. According to the utility model, the energy-taking device can be detected without a manual inspection mode, and the device can adapt to the rapidly changing operation state of the energy-taking device, thereby effectively improving the detection accuracy of the energy-taking device.

Description

Technical Field

[0001] This utility model relates to the field of power detection technology, and in particular to a detection circuit for an energy harvesting device. Background Technology

[0002] With the continuous growth of electricity demand, the reliability and safety of power systems have become paramount. 10kV pole-mounted circuit breakers, as crucial equipment in distribution networks, undertake the key functions of circuit protection and fault isolation. The normal operation of the circuit breaker directly affects the stability and reliability of the power system. In 10kV pole-mounted circuit breakers, the energy extraction device is mainly used to provide the necessary operating energy, enabling it to promptly disconnect the circuit in the event of a fault, preventing equipment and personnel safety accidents. The performance of the energy extraction device directly affects the response speed and operational reliability of the circuit breaker.

[0003] In related technologies, the detection of energy harvesting devices is usually carried out through manual inspection, which is difficult to adapt to the rapidly changing operating conditions of the energy harvesting devices, resulting in low detection accuracy. Utility Model Content

[0004] The present invention aims to provide a detection circuit for an energy harvesting device, so as to effectively improve the detection accuracy of the energy harvesting device.

[0005] The technical solution of this utility model embodiment is implemented as follows:

[0006] This utility model embodiment provides a detection circuit for an energy harvesting device, including:

[0007] An integrating circuit, one end of which is electrically connected to the energy harvesting device;

[0008] A first comparator circuit, one end of which is electrically connected to the other end of the integrator circuit;

[0009] A second comparison circuit, one end of which is electrically connected to the other end of the energy harvesting device;

[0010] The controller is electrically connected to the other end of the first comparison circuit and the second comparison circuit, respectively.

[0011] The aforementioned first comparison circuit includes a first voltage comparison circuit, a second voltage comparison circuit, and a third voltage comparison circuit, which are connected in parallel. One end of the first voltage comparison circuit is electrically connected to the other end of the integrator circuit, and the other end of the first voltage comparison circuit is electrically connected to the controller. One end of the second voltage comparison circuit is electrically connected to the other end of the integrator circuit, and the other end of the second voltage comparison circuit is electrically connected to the controller. One end of the third voltage comparison circuit is electrically connected to the other end of the integrator circuit, and the other end of the third voltage comparison circuit is electrically connected to the controller.

[0012] The aforementioned first voltage comparison circuit includes: a first voltage comparator, the first terminal of which is electrically connected to the controller via a first switch (S7); a first input branch, the first terminal of which is electrically connected to the second terminal of the first voltage comparator, and the second terminal of which is connected to a first reference voltage terminal (Vref1); and a second input branch, the first terminal of which is electrically connected to the third terminal of the first voltage comparator, and the second terminal of which is electrically connected to the integrator circuit via a second switch (S6).

[0013] The aforementioned second voltage comparison circuit includes: a second voltage comparator, the first terminal of which is electrically connected to the controller via a third switch (S9); a third input branch, the first terminal of which is electrically connected to the second terminal of the second voltage comparator, and the second terminal of which is electrically connected to the integrator circuit via a fourth switch (S8); and a fourth input branch, the first terminal of which is electrically connected to the third terminal of the second voltage comparator, and the second terminal of which is grounded.

[0014] The aforementioned third voltage comparison circuit includes: a third voltage comparator, the first terminal of which is electrically connected to the controller via a fifth switch (S11); a fifth input branch, the first terminal of which is electrically connected to the second terminal of the third voltage comparator, and the second terminal of which is electrically connected to the integrator circuit via a sixth switch (S10); and a sixth input branch, the first terminal of which is electrically connected to the third terminal of the third voltage comparator, and the second terminal of which is connected to a second reference voltage terminal.

[0015] The second comparison circuit mentioned above includes: a fourth voltage comparator, the first terminal of which is electrically connected to the controller via a seventh switch (S13); a seventh input branch, the first terminal of which is electrically connected to the second terminal of the fourth voltage comparator, and the second terminal of which is electrically connected to the energy harvesting device via an eighth switch (S12); and an eighth input branch, the first terminal of which is electrically connected to the third terminal of the fourth voltage comparator, and the second terminal of which is connected to a third reference voltage terminal.

[0016] The aforementioned integrating circuit includes: a fifth voltage comparator, the first terminal of which is electrically connected to the first comparator circuit, and the second terminal of which is grounded (GND4); a first resistor (R1), one end of which is electrically connected to the third terminal of the fifth voltage comparator, and the second terminal of which is electrically connected to the first AC power supply (AC2) via a ninth switch (S4); and a first capacitor (C3), which is connected in series with the tenth switch (S3) between the first terminal and the third segment of the fifth voltage comparator.

[0017] The aforementioned energy harvesting device includes: an eleventh switch (S1), one end of which is electrically connected to the third terminal of the fifth voltage comparator; a second capacitor (C1) and a third capacitor (C2), one end of the second capacitor (C1) being connected to the other end of the eleventh switch (S1), and the other end of the second capacitor (C1) being connected to the first terminal of the fifth voltage comparator through the third capacitor (C2); and a transformer, the transformer including a first coil and a second coil, one end of the first coil being connected to the connection point of the second and third capacitors through a first inductor, and the other end of the first coil being connected to the end of the third capacitor (C2) away from the connection point.

[0018] The second comparison circuit is connected to the other end of the first resistor (R1) via the twelfth switch (S5).

[0019] The aforementioned energy harvesting device further includes: a second AC power source, which is connected in parallel with the second capacitor and the third capacitor connected in series via a thirteenth switch (S2).

[0020] The present invention has the following beneficial effects:

[0021] The detection circuit of the energy harvesting device integrates an integrator circuit, a first comparator circuit, a second comparator circuit, and a controller. The integrator circuit can accurately integrate the input voltage of the energy harvesting device, which helps to extract key information from complex signals. The first comparator circuit, connected to the input of the integrator circuit, can detect and compare the integrated voltage in real time to identify the type of energy harvesting device. The second comparator circuit is connected to the other end of the energy harvesting device to provide real-time data of the output voltage of the energy harvesting device. The controller, connected to the first and second comparator circuits, can make rapid responses and adjustments based on the comparison results, thereby enhancing the adaptability of the detection circuit to different energy harvesting devices. This eliminates the need for manual inspection of the energy harvesting device and allows it to adapt to the rapidly changing operating state of the energy harvesting device, thus effectively improving the detection accuracy of the energy harvesting device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the detection circuit of an energy harvesting device provided in one embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the detection circuit of the energy harvesting device provided in another embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the detection circuit of the energy harvesting device provided in another embodiment of this utility model. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limitations on the present utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0027] In the following description, the terms "first, second, third" are used merely to distinguish similar objects and do not represent a specific ordering of objects. It is understood that "first, second, third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of the present invention described herein can be implemented in an order other than that illustrated or described herein.

[0028] Unless otherwise defined, all technical and scientific terms used in the embodiments of this utility model have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the embodiments of this utility model is for descriptive purposes only and is not intended to limit the scope of the utility model.

[0029] Before providing a further detailed description of the embodiments of this utility model, the nouns and terms involved in the embodiments of this utility model will be explained, and the nouns and terms involved in the embodiments of this utility model are subject to the following interpretations.

[0030] 1) Energy Harvesting Device: This generally refers to a device in a power system used to obtain energy from the power grid or other energy sources and provide the required energy to specific equipment or systems. In the application of 10kV pole-mounted circuit breakers, the role of the energy harvesting device is crucial. A 10kV pole-mounted circuit breaker is an outdoor high-voltage switchgear installed in a power system, mainly used for distributing electrical energy, controlling circuits, and protecting lines from faults such as overloads and short circuits. When an abnormality is detected in the circuit, the circuit breaker needs to quickly disconnect the circuit to avoid further damage caused by the fault. The research background of adaptive detection tooling for energy harvesting devices in 10kV pole-mounted circuit breakers stems not only from the power industry's pursuit of safety, efficiency, and intelligence but also reflects the needs of current technological development. This research can provide new ideas and tools for the management and maintenance of power equipment, improving the reliability and safety of the entire power system.

[0031] 2) An integrating circuit is an analog circuit whose function is to output a signal proportional to the time integral of the input signal. In this type of circuit, the most basic combination of circuit elements is typically a resistor (R) and a capacitor (C). When an input signal is applied to the circuit, the capacitor accumulates charge according to the magnitude of the input signal and the duration of its effect.

[0032] 3) Voltage Comparator: An electronic circuit primarily used to compare the relative magnitudes of two voltage signals and generate a digital output signal accordingly. It serves as an interface between analog and digital circuits, converting analog signals into digital signals.

[0033] In related technologies, the detection of energy harvesting devices is usually carried out through manual inspection, which is difficult to adapt to the rapidly changing operating conditions of the energy harvesting devices, resulting in low detection accuracy.

[0034] This utility model provides a detection circuit for an energy harvesting device, which can effectively improve the detection accuracy of the energy harvesting device.

[0035] The following will combine Figures 1 to 3This illustrates an exemplary application and implementation of the detection circuit of the energy harvesting device provided in the embodiments of this utility model.

[0036] See Figure 1 , Figure 1 This is a schematic diagram of the detection circuit of an energy harvesting device provided in one embodiment of the present invention. The detection circuit provided in this embodiment of the present invention includes: an integrating circuit, one end of which is electrically connected to the energy harvesting device; a first comparison circuit, one end of which is electrically connected to the other end of the integrating circuit; a second comparison circuit, one end of which is electrically connected to the other end of the energy harvesting device; and a controller, which is electrically connected to the other ends of the first comparison circuit and the second comparison circuit, respectively.

[0037] In some embodiments, see Figure 2 , Figure 2 This is a schematic diagram of the detection circuit of the energy harvesting device provided in another embodiment of the present invention. The first comparison circuit includes a first voltage comparison circuit, a second voltage comparison circuit and a third voltage comparison circuit, which are connected in parallel.

[0038] In some embodiments, the detection circuit provided by this utility model is a circuit for monitoring specific parameters (such as voltage, current, etc.). It processes and compares the energy obtained by the energy harvesting device, and then the controller makes a decision or performs corresponding operations.

[0039] In some embodiments, the first comparator circuit is electrically connected to the other end of the integrator circuit, and its function is to compare the output voltage of the integrator circuit with a preset reference voltage. The first comparator circuit consists of three voltage comparator circuits connected in parallel, indicating that it can simultaneously perform multi-level comparisons of the output of the integrator circuit for detecting different threshold conditions. The parallel voltage comparator circuits can improve the circuit's response speed and can handle multiple different comparison tasks simultaneously.

[0040] In some embodiments, one end of the second comparator circuit is electrically connected to the other end of the power harvesting device, meaning it may directly compare the output voltage of the power harvesting device with another reference voltage. The specific function of the second comparator circuit may be similar to that of the first comparator circuit, but its input source is different.

[0041] In some embodiments, an energy harvesting device refers to a device capable of harvesting energy from a power source or other energy source, typically used to provide the energy required for the operation of a circuit or system. In this invention, the energy harvesting device may refer to a device that harvests energy from the power grid or other energy source. A controller is an electronic device capable of making decisions and performing corresponding operations based on input signals. In this invention, the controller controls the operating state of the circuit or triggers other events based on the output signals of a first comparison circuit and a second comparison circuit.

[0042] In some embodiments, the controller is electrically connected to the other ends of both the first and second comparison circuits, and its function is to make decisions based on the outputs of the comparison circuits. The controller can be a microprocessor or logic circuit that starts or stops a process, triggers an alarm, records data, etc., based on the output signals of the comparison circuits. The design of the detection circuit allows for precise monitoring and control of the energy output from the energy harvesting device. By smoothing the signal through an integrator circuit and setting different thresholds through multiple comparison circuits, complex logical judgments and precise parameter control can be achieved. The controller acts as the decision center, executing corresponding operations based on the feedback from the comparison circuits. This type of circuit is very useful in power system monitoring, energy management, and other applications requiring precise detection and control.

[0043] In some embodiments, see Figure 2 One end of the first voltage comparison circuit is electrically connected to the other end of the integrator circuit, and the other end of the first voltage comparison circuit is electrically connected to the controller; one end of the second voltage comparison circuit is electrically connected to the other end of the integrator circuit, and the other end of the second voltage comparison circuit is electrically connected to the controller; one end of the third voltage comparison circuit is electrically connected to the other end of the integrator circuit, and the other end of the third voltage comparison circuit is electrically connected to the controller.

[0044] In some embodiments, the first comparison circuit consists of three voltage comparison circuits connected in parallel. Each comparison circuit has a specific function. One end of the first voltage comparison circuit is electrically connected to the other end of the integrator circuit, and the other end is electrically connected to the controller. It is used to detect whether the output of the integrator circuit has reached a first preset threshold voltage. One end of the second voltage comparison circuit is electrically connected to the other end of the integrator circuit, and the other end is electrically connected to the controller. It is used to detect a second preset threshold voltage. Similarly, the third voltage comparison circuit is electrically connected to the other end of the integrator circuit, and the other end is electrically connected to the controller. It is used to detect a third preset threshold voltage. The parallel voltage comparison circuits allow for the simultaneous detection of multiple different thresholds, thus enabling rapid response and processing of different signal conditions.

[0045] In some embodiments, see Figure 3 , Figure 3This is a schematic diagram of the detection circuit of an energy harvesting device provided in another embodiment of the present invention. The first voltage comparison circuit includes: a first voltage comparator, the first terminal 11 of the first voltage comparator being electrically connected to the controller via a first switch S7; a first input branch, the first terminal of the first input branch being electrically connected to the second terminal 12 of the first voltage comparator, and the second terminal of the first input branch being connected to the first reference voltage terminal Vref1; and a second input branch, the first terminal of the second input branch being electrically connected to the third terminal 13 of the first voltage comparator, and the second terminal of the second input branch being electrically connected to the integrating circuit via a second switch S6.

[0046] In some embodiments, see Figure 3 The first input branch includes resistor R3, and the second input branch includes resistor R2.

[0047] In some embodiments, the first comparison circuit includes three parallel voltage comparison circuits for comparing the signal output by the integrator circuit with a preset reference voltage. The first voltage comparison circuit includes a first voltage comparator 11 for comparing the magnitudes of two input voltages and outputting the comparison result. A first input branch is connected to the second terminal 12 of the first voltage comparator and provides a reference voltage through a first reference voltage terminal Vref1. The first input branch includes a resistor R3 for setting the circuit's input impedance or adjusting the signal amplitude. A second input branch is connected to the third terminal 13 of the first voltage comparator and is connected to the integrator circuit through a second switch S6. The second input branch includes a resistor R2, also used to adjust the circuit's input characteristics or the signal amplitude. The design of the first voltage comparison circuit allows comparison of the integrator circuit's output voltage with the reference voltage to determine whether a preset threshold has been reached. The other end of the second comparison circuit is electrically connected to the other end of the power harvesting device; its function may be to monitor the power harvesting device's output to ensure it operates within a normal range. The controller is the decision-making center of the circuit and is electrically connected to the other ends of both the first and second comparison circuits. The controller receives the output signals from the comparison circuits and performs corresponding control operations based on these signals. The first switch S7 connects the first terminal 11 of the first voltage comparator to the controller, allowing the controller to receive the comparator's output as needed. The second switch S6 connects the second input branch to the integrator circuit, allowing the output signal of the integrator circuit to be sent to the first voltage comparator when needed.

[0048] In some embodiments, the integrator circuit receives and processes the output signal from the energy harvesting device. The processed signal is sent to a first voltage comparator via a second input branch (including resistor R2) and a second switch S6. The first voltage comparator compares the output signal of the integrator circuit with a first reference voltage (VREF1) provided through the first input branch (including resistor R3). The output of the first voltage comparator is sent to a controller via a first switch S7, and the controller performs corresponding operations based on the comparison result. Simultaneously, the second comparator circuit monitors the output of the energy harvesting device and also sends the result to the controller.

[0049] In some embodiments, see Figure 3 The second voltage comparison circuit includes: a second voltage comparator, the first terminal 21 of which is electrically connected to the controller via a third switch S9; a third input branch, the first terminal of which is electrically connected to the second terminal 22 of the second voltage comparator, and the second terminal of which is electrically connected to the integrator circuit via a fourth switch S8; and a fourth input branch, the first terminal of which is electrically connected to the third terminal 23 of the second voltage comparator, and the second terminal of which is grounded (equivalent to connecting to a fourth reference potential Vref2, and Vref2 = 0).

[0050] In some embodiments, see Figure 3 The third input branch includes resistor R4, and the fourth input branch includes resistor R5.

[0051] In some embodiments, the second voltage comparator circuit is a parallel unit in the first comparator circuit, and it includes the following components: A second voltage comparator: the core component of the circuit, used to compare the magnitudes of two input voltages and output the comparison result. A third input branch: connected to the second terminal 22 of the second voltage comparator and connected to the integrator circuit via a fourth switch S8. The third input branch includes a resistor R4, used to set the input impedance of the circuit or adjust the signal amplitude. A fourth input branch: connected to the third terminal 23 of the second voltage comparator, with its second terminal grounded. The fourth input branch includes a resistor R5, also used to adjust the input characteristics of the circuit or the signal amplitude.

[0052] In some embodiments, the integrator circuit processes the output signal of the energy harvesting device and outputs it to the parallel voltage comparator circuits of the first comparator circuit, including the second voltage comparator circuit. In the second voltage comparator circuit, the output signal of the integrator circuit is sent to the second terminal 22 of the second voltage comparator through the third input branch (including resistor R4) and the fourth switch S8. Simultaneously, the fourth input branch (including resistor R5) grounds the third terminal 23 of the second voltage comparator, possibly to provide a stable reference point or to set the comparator's threshold. The second voltage comparator compares the processed signal with ground level, and based on the comparison result, the output signal is sent to the controller through the third switch S9. The controller makes corresponding control decisions based on the output signals of the second voltage comparator and other comparator circuits. Overall, this design of the detection circuit provides accurate monitoring of the energy harvesting device output and, through the cooperation of multiple comparator circuits and the controller, enables real-time control of the system. The switches and resistors in the circuit are used to adjust the circuit's operating characteristics, ensuring that the circuit can adapt to different operating conditions and signal characteristics.

[0053] Thus, the detection circuit provided in this embodiment of the invention, through its unique modular design, achieves efficient monitoring and precise control of the output signal of the energy harvesting device, bringing significant beneficial effects. The use of the integrating circuit effectively smooths the output of the energy harvesting device, improves signal stability, and provides a solid foundation for the subsequent comparison circuit. The three voltage comparison circuits connected in parallel in the first comparison circuit not only enhance the circuit's flexibility in detecting different thresholds but also improve the circuit's response speed and accuracy. In particular, the design of the second voltage comparison circuit, through the intelligent control of the third switch S9 and the fourth switch S8, and the precise adjustment of resistors R4 and R5, achieves a fine comparison of the output signal of the integrating circuit, thereby ensuring the reliability of the detection results. This circuit structure not only optimizes the system performance but also reduces maintenance costs and failure risks, improves the stability and safety of the entire system, and is of great significance for ensuring the normal operation of the power system and improving energy management efficiency.

[0054] In some embodiments, see Figure 3 The third voltage comparison circuit includes: a third voltage comparator, the first terminal of which is electrically connected to the controller via a fifth switch S11; a fifth input branch, the first terminal of which is electrically connected to the second terminal of the third voltage comparator, and the second terminal of which is electrically connected to the integrator circuit via a sixth switch S10; and a sixth input branch, the first terminal of which is electrically connected to the third terminal of the third voltage comparator, and the second terminal of which is connected to a reference voltage terminal.

[0055] In some embodiments, see Figure 3The fifth input branch includes resistor R6, and the sixth input circuit includes resistor R7.

[0056] In some embodiments, the third voltage comparator circuit is a parallel unit in the first comparator circuit, and it includes the following components: A third voltage comparator: the core component of the circuit, used to compare the magnitudes of two input voltages and output the comparison result. A fifth input branch: connected to the second terminal of the third voltage comparator and connected to the integrator circuit via a sixth switch S10. The fifth input branch includes a resistor R6, used to set the input impedance of the circuit or adjust the amplitude of the signal. A sixth input branch: connected to the third terminal of the third voltage comparator, with its second terminal connected to the reference voltage terminal. The sixth input branch includes a resistor R7, used to adjust the input characteristics of the circuit or the amplitude of the signal.

[0057] In some embodiments, the integrator circuit processes the output signal of the energy harvesting device and outputs it to the parallel voltage comparator circuits of the first comparator circuit, including the third voltage comparator circuit. In the third voltage comparator circuit, the output signal of the integrator circuit is sent to the second terminal 32 of the third voltage comparator through the fifth input branch (including resistor R6) and the sixth switch S10. Simultaneously, the sixth input branch (including resistor R7) connects the third terminal 33 of the third voltage comparator to the second reference voltage terminal Vref3, allowing the comparator to compare the output signal of the integrator circuit with a predetermined reference voltage. Based on the comparison result, the third voltage comparator outputs a signal to the controller through the fifth switch S11. The controller makes corresponding control decisions based on the output signals of the third voltage comparator and other comparator circuits. Overall, this design of the detection circuit provides accurate monitoring of the energy harvesting device output. Through the cooperation of multiple comparator circuits and the controller, the system can achieve real-time control of the signal. The switches and resistors in the circuit are used to adjust the operating characteristics of the circuit, ensuring that the circuit can adapt to different operating conditions and signal characteristics. Furthermore, the parallel voltage comparator circuit allows for the simultaneous detection of multiple different thresholds, enabling rapid response and processing of different signal conditions, thus improving the system's reliability and flexibility.

[0058] Thus, the introduction of the integrator circuit effectively smooths the signal output from the energy harvesting device, reduces signal noise, and improves signal stability, providing a reliable input signal for the subsequent comparison circuit. Secondly, the three voltage comparators connected in parallel in the first comparison circuit can simultaneously detect different thresholds, which not only improves detection accuracy but also enhances the circuit's adaptability to different operating conditions. Furthermore, the second comparison circuit directly monitors the output of the energy harvesting device, ensuring the system's real-time performance and safety. Specifically, in the third voltage comparator circuit, through the flexible control of the fifth switch S11 and the sixth switch S10, and the fine adjustment of resistors R6 and R7, the circuit can accurately compare the output signal of the integrator circuit with the reference voltage, thereby achieving precise differentiation of signal states. This design enables the detection circuit to not only respond quickly but also maintain high stability in complex signal environments.

[0059] In some embodiments, see Figure 3 The second comparison circuit includes: a fourth voltage comparator, the first terminal 41 of which is electrically connected to the controller via a seventh switch S13; a seventh input branch, the first terminal of which is electrically connected to the second terminal 42 of the fourth voltage comparator, and the second terminal of which is electrically connected to the energy harvesting device via an eighth switch S12; and an eighth input branch, the first terminal of which is electrically connected to the third terminal 43 of the fourth voltage comparator, and the second terminal of which is connected to the third reference voltage terminal Vref4.

[0060] In some embodiments, see Figure 3 The seventh input branch includes resistor R9, and the eighth input branch includes resistor R8.

[0061] In some embodiments, the fourth voltage comparator is the core component of the second comparison circuit. The first terminal 41 of the fourth voltage comparator is electrically connected to the controller via the seventh switch S13 for transmitting the comparison result. The seventh input branch has one end electrically connected to the second terminal 42 of the fourth voltage comparator and the other end electrically connected to the power extraction device via the eighth switch S12. The seventh input branch includes a resistor R9 for adjusting the circuit's input impedance or the signal amplitude. The eighth input branch has one end electrically connected to the third terminal 43 of the fourth voltage comparator and the other end connected to the reference voltage terminal Vref4. The eighth input branch includes a resistor R8, also used to adjust the circuit's input characteristics.

[0062] In some embodiments, the integrator circuit processes the output signal of the energy harvesting device and outputs it to the first comparator circuit and the second comparator circuit. The three parallel voltage comparators in the first comparator circuit perform threshold comparisons on the output signal of the integrator circuit and transmit the comparison results to the controller. The fourth voltage comparator in the second comparator circuit monitors the output voltage of the energy harvesting device and transmits the results to the controller. Based on the output signals of the first and second comparator circuits, the controller makes corresponding control decisions, such as adjusting operating parameters, starting or stopping the equipment, etc.

[0063] Thus, the direct connection between the integrating circuit and the energy harvesting device ensures the timeliness and accuracy of signal processing. The three parallel voltage comparators in the first comparator circuit provide multiple detection capabilities for different thresholds, enhancing the circuit's flexibility and reliability. The design of the second comparator circuit, especially the introduction of the fourth voltage comparator, through the ingenious control of the seventh switch S13 and the eighth switch S12, and the fine adjustment of resistors R9 and R8, achieves precise monitoring of the energy harvesting device's output. This design not only improves the system's detection accuracy but also optimizes the response speed and reduces the system's failure rate, thereby enhancing the overall system's stability and safety. In summary, the beneficial effects of this detection circuit are reflected in improved signal processing efficiency, reduced possibility of erroneous judgments, and more reliable support for energy management and power system operation.

[0064] In some embodiments, see Figure 3 The integrating circuit includes: a fifth voltage comparator, the first terminal 51 of which is electrically connected to the first comparator circuit, and the second terminal 52 of which is grounded to GND4; a first resistor R1, one end of which is electrically connected to the third terminal 53 of the fifth voltage comparator, and the second terminal of which is electrically connected to the first AC power supply AC2 through a ninth switch S4; and a first capacitor C3, which is connected in series with a tenth switch S3 between the first terminal 51 and the third terminal 53 of the fifth voltage comparator.

[0065] In some embodiments, the internal structure of the integrating circuit includes a fifth voltage comparator, which is one of the core components of the integrating circuit. The first terminal 51 of the fifth voltage comparator is electrically connected to the first comparator circuit, and the second terminal 52 of the fifth voltage comparator is grounded to GND4. This indicates that the fifth voltage comparator may be used to compare the output signal of the integrating circuit with the ground level, thereby detecting whether the integrating circuit has reached a certain threshold. One end of the first resistor R1 is electrically connected to the third terminal 53 of the fifth voltage comparator, and the other end is electrically connected to the first AC power supply AC2 through the ninth switch S4. The first resistor R1 may be used to adjust the input impedance of the circuit or to set the reference voltage of the comparator. The first capacitor C3 is connected in series with the tenth switch S3 between the first terminal 51 and the third terminal 53 of the fifth voltage comparator. The first capacitor C3 is typically used for filtering and smoothing signals, which may be to reduce noise or to integrate the signal over time.

[0066] In some embodiments, the output signal of the energy harvesting device is processed by an integrating circuit, and the processed signal is output to a first comparator circuit. A parallel voltage comparator circuit in the first comparator circuit performs a threshold comparison on the output signal of the integrating circuit and transmits the comparison result to the controller. Inside the integrating circuit, a fourth voltage comparator compares the output signal of the integrating circuit with ground level, and further adjusts and filters the signal using a first resistor and a first capacitor. The controller makes corresponding control decisions based on the output signals of the first comparator circuit and the comparators inside the integrating circuit.

[0067] This improves the accuracy of signal processing. By using integrator circuits and filtering components, signal noise is effectively reduced, ensuring signal stability and reliability. It also enhances the system's detection capability; the parallel voltage comparator circuit in the first comparator circuit allows for simultaneous detection of multiple thresholds, improving detection flexibility and response speed. Furthermore, it optimizes the system's control strategy, enabling precise control of the system state based on the output signal of the comparator circuit, achieving real-time adjustment and optimization. Finally, it improves the system's stability and reliability; through refined circuit design, the system can better cope with external interference, reducing misjudgments and malfunctions, thus ensuring long-term stable operation.

[0068] In some embodiments, see Figure 3The energy harvesting device includes: an eleventh switch S1, one end of which is electrically connected to the third terminal 53 of the fifth voltage comparator; a second capacitor C1 and a third capacitor C2, one end of the second capacitor C1 being connected to the other end of the eleventh switch S1, and the other end of the second capacitor C1 being connected to the first terminal 51 of the fifth voltage comparator through the third capacitor C2; and a transformer, the transformer including a first coil 61 and a second coil 62, one end of the first coil 61 being connected to the connection point of the second capacitor C1 and the third capacitor C2 through a first inductor L1, and the other end of the first coil being connected to the end of the third capacitor C2 away from the connection point.

[0069] In some embodiments, see Figure 3 If the output of the energy harvesting device is a DC voltage, then the energy harvesting device includes: a rectifier module, the first end of which is electrically connected to the second coil 62, and the second end of which is electrically connected to the second comparator circuit through the eighth switch S12.

[0070] In some embodiments, if the output of the energy harvesting device is an AC voltage, then the energy harvesting device does not require a rectifier module.

[0071] In some embodiments, for the integrating circuit, the first terminal 51 of the fifth voltage comparator is electrically connected to the first comparator circuit for comparing the input voltage and the reference voltage. The first terminal of the first resistor R1 is electrically connected to the third terminal 53 of the fifth voltage comparator, and the other terminal is connected to the first AC power supply AC2 via the ninth switch S4. The first capacitor C3 is connected in series with the tenth switch S3 between the first terminal 51 and the third terminal 53 of the fifth voltage comparator.

[0072] In some embodiments, for the energy harvesting device: Eleventh switch S1: electrically connected to the third terminal 53 of the fifth voltage comparator, used to control the operating state of the energy harvesting device; Second capacitor C1 and third capacitor C2: one end of the second capacitor C1 is connected to the other end of the eleventh switch S1, and the other end of the second capacitor C1 is connected to the first terminal of the fifth voltage comparator through the third capacitor C2, used to store and regulate energy; Transformer: including a first coil 61 and a second coil 62, one end of the first coil 61 is connected to the connection point of the second capacitor C1 and the third capacitor C2 through a first inductor L1, and the other end of the first coil 61 is connected to the end of the third capacitor C2 away from the connection point, used for energy conversion; Rectifier module: the first terminal is electrically connected to the second coil 62, and the second terminal is electrically connected to the second comparator circuit through the eighth switch S12, used to convert alternating current to direct current.

[0073] Thus, by organically combining multiple modules such as the integrating circuit, the comparator circuit, and the controller, the accuracy and efficiency of detection are greatly improved. The electrical connection between the integrating circuit and the energy harvesting device ensures that the circuit can obtain sufficient energy from the energy harvesting device, maintaining the stability of circuit operation. The setting of the first and second comparator circuits enables the circuit to perform multi-faceted comparisons, improving the comprehensiveness of detection. In addition, the parallel connection of the three voltage comparator circuits within the first comparator circuit enables the circuit to perform multi-channel voltage comparisons simultaneously, improving the detection speed. Through the optimized design of the energy harvesting device and the connection between the rectifier module and the comparator circuit, the energy utilization efficiency and detection accuracy of the circuit are further improved. This detection circuit improves detection efficiency and reduces energy consumption while ensuring detection accuracy, exhibiting significant technical advantages. The circuit integrates the energy harvested by the energy harvesting device through the integrating circuit, then compares the output voltage of the integrating circuit and the energy harvesting device through two comparator circuits, and finally the controller performs logical processing and control on the comparison results. This design can improve the detection accuracy and stability of the circuit.

[0074] In some embodiments, see Figure 3 One end of the second capacitor C1 is connected to the other end of the eleventh switch S1, and the other end of the second capacitor C1 is connected to the first terminal 51 of the fifth voltage comparator through the third capacitor C2. The second comparison circuit is connected to the other end of the first resistor R1 through the twelfth switch S5.

[0075] In some embodiments, the energy harvesting device includes: an eleventh switch S1, one end of which is electrically connected to the third terminal 53 of a fifth voltage comparator for controlling the operating state of the energy harvesting device; a second capacitor C1 and a third capacitor C2 connected in series for energy storage. The transformer includes a first coil 61 and a second coil 62, one end of which is connected to the connection point of the second capacitor C1 and the third capacitor C2 via a first inductor L1, and the other end of which is connected to the end of the third capacitor C2 furthest from the connection point, for voltage boosting and energy conversion; a rectifier module that converts the AC output from the transformer into DC, is electrically connected to the second coil 62, and is connected to the second comparator circuit via an eighth switch S12; one end of the second capacitor C1 is connected to the other end of the eleventh switch S1, and the other end of the second capacitor C1 is connected to the first terminal 51 of the fifth voltage comparator via the third capacitor C2, which may change the capacitance value of the circuit, thus affecting the time constant of the integrating circuit. The second comparator circuit is connected to the other end of the first resistor R1 via a twelfth switch S5, indicating that the circuit connection can be adjusted as needed.

[0076] Thus, the detection circuit provided in this embodiment of the invention achieves accurate processing and efficient comparison of energy signals through the integration of an integrator circuit, multiple comparison circuits, and a flexible switching configuration. This design not only improves the accuracy and reliability of signal processing but also enhances the circuit's ability to detect different voltage thresholds by connecting multiple voltage comparison circuits in parallel. Furthermore, the close connection between the integrator circuit and the energy harvesting device ensures real-time processing of the energy signal, while the connection between the controller and the comparison circuit enables the circuit to respond quickly and make accurate judgments. Overall, this improves detection accuracy, reduces the false judgment rate, and also enhances the circuit's adaptability and flexibility, making it suitable for energy detection and control applications in various complex environments.

[0077] In some embodiments, see Figure 3 The energy harvesting device further includes: a second AC power supply AC1, which is connected in parallel with the second capacitor and the third capacitor connected in series via a thirteenth switch S2.

[0078] In some embodiments, for the energy harvesting section, the energy harvesting device includes a second capacitor C1 and a third capacitor C2, which are connected in series to store energy. A transformer (including a first coil 61 and a second coil 62) is used to boost the voltage and convert the energy. A rectifier module converts the AC power output from the second coil 62 of the transformer into DC power for use by subsequent circuits. An eleventh switch S1 is electrically connected to the third terminal 53 of a fifth voltage comparator to control the operating state of the energy harvesting device. A second AC power supply AC1 is connected in parallel with the series-connected second capacitor C1 and third capacitor C2 via a thirteenth switch S2, possibly to provide additional energy to the circuit under specific conditions.

[0079] In some embodiments, for the signal processing section, the integrating circuit includes a fifth voltage comparator, a first resistor R1, and a first capacitor C3, for integrating the input signal. One end of the fifth voltage comparator is grounded to GND4, and the other end is electrically connected to the first comparator circuit. The first comparator circuit includes three voltage comparator circuits connected in parallel, which can simultaneously detect multiple different voltage levels.

[0080] In some embodiments, for the logic control section, the controller is electrically connected to a first comparison circuit and a second comparison circuit, and is used to receive the output signal of the comparison circuit and perform logical judgment. One end of the second comparison circuit is electrically connected to the other end of the energy harvesting device, and the other end is connected to the controller via a switch.

[0081] Thus, by integrating efficient energy harvesting, precise signal processing, and flexible logic control functions, high-precision detection and processing of energy signals are achieved. The tight connection between the integrator circuit and the energy harvesting device ensures effective conversion and integration of the energy signal, while the parallel connection of multiple voltage comparison circuits significantly improves the detection capability for different voltage thresholds, enhancing the circuit's adaptability and reliability. Furthermore, by introducing a second AC power supply and multiple switches, the circuit possesses the ability to adjust its operating state in varying environments, greatly improving the system's stability and robustness. Overall, these designs enable the detection circuit not only to accurately detect energy signals but also to flexibly adapt to various application requirements, thus possessing significant practical value in the field of energy harvesting and control.

[0082] Thus, the detection circuit of the energy harvesting device integrates an integrator circuit, a first comparator circuit, a second comparator circuit, and a controller. The integrator circuit can accurately integrate the input voltage of the energy harvesting device, which helps to extract key information from complex signals. The first comparator circuit, connected to the input of the integrator circuit, can detect and compare the integrated voltage in real time to identify the type of energy harvesting device. The second comparator circuit is connected to the other end of the energy harvesting device to provide real-time data of the output voltage of the energy harvesting device. The controller, connected to the first and second comparator circuits, can make rapid responses and adjustments based on the comparison results, thereby enhancing the adaptability of the detection circuit to different energy harvesting devices. This eliminates the need for manual inspection of the energy harvesting device and allows it to adapt to the rapidly changing operating state of the energy harvesting device, thus effectively improving the detection accuracy of the energy harvesting device.

[0083] The following describes the process of detecting the energy harvesting device through the detection circuit of the energy harvesting device described above.

[0084] In some embodiments, see Figure 3 After connecting the energy harvesting device to the circuit of the testing fixture (the testing circuit described above), the controller first controls switches S1, S4, S6, and S7 to close, and all other switches to open. This allows the high-voltage capacitor C1 and the low-voltage capacitor C2 of the energy harvesting device to be used as capacitors in the integrating circuit and connected to the integrating circuit. It also allows the first AC power supply AC2 to power the integrating circuit and connects the two ends of the first voltage comparison circuit to the integrating circuit and the controller, respectively.

[0085] In some embodiments, the controller receives the output signals of the first and second comparison circuits and performs logical judgments and control. The controller adjusts the capacitor configuration and power supply of the integrator circuit, and controls the overall circuit operation, by controlling the states of switches S1, S4, S6, and S7. When the controller closes switches S1, S4, S6, and S7 and the other switches are open, the high-voltage capacitor C1 and low-voltage capacitor C2 of the energy harvesting device are connected as capacitors for the integrator circuit, and the first AC power supply AC2 powers the integrator circuit. The two ends of the first voltage comparison circuit are connected to the integrator circuit and the controller respectively, enabling real-time comparison of the output signal of the integrator circuit. The controller performs logical judgments and control based on the output signal of the comparison circuit, thereby achieving accurate detection and processing of the energy signal.

[0086] Thus, by combining the energy harvesting device with an integrating circuit and a comparator circuit, the circuit design achieves a highly efficient and accurate energy detection system. The effective connection and utilization of the integrating circuit ensures accurate integration and processing of the energy signal, while the parallel connection of multiple voltage comparator circuits enhances the circuit's ability to simultaneously detect different voltage thresholds. Secondly, the flexible switch configuration in the circuit enables the system to adjust its operating state to adapt to different energy harvesting and detection requirements. For example, after the energy harvesting device is connected to the detection circuit, by controlling the on / off state of specific switches, the high-voltage capacitor C1 and the low-voltage capacitor C2 in the energy harvesting device can be quickly integrated into the integrating circuit, thereby adjusting the time constant and response characteristics of the integrating circuit. Furthermore, through intelligent management by the controller, the circuit can switch between different operating modes at different operating stages. In the initial stage, by closing switches S1, S4, S6, and S7, and opening the remaining switches, the circuit can utilize the first AC power supply AC2 to power the integrating circuit, while ensuring the correct connection of the first voltage comparator circuit with the integrating circuit and the controller. This ensures stable operation of the circuit during startup and prepares it for signal detection and comparison. The overall circuit design enhances the system's stability and robustness, enabling the detection circuit to maintain good performance in varying environments. This provides reliable and efficient energy detection and control solutions across diverse application scenarios. These advantages give this detection circuit significant practical value and application potential in fields such as energy harvesting, environmental monitoring, and automation control.

[0087] In some embodiments, see Figure 3After the circuit starts working, AC2 inputs a given voltage V0 to the integrator circuit, and the integrator circuit outputs a voltage V1. After comparing the voltage V1 with the reference voltage Vref1 of the first voltage comparison circuit, if the first voltage comparison circuit outputs a high voltage signal, it means that the reference voltage Vref1 is greater than the voltage V1, and thus it means that the power harvesting device is a 10nF power harvesting device; if the first voltage comparison circuit outputs a low voltage signal, it means that the reference voltage Vref1 is less than the voltage V1, and thus it means that the power harvesting device is a 5nF power harvesting device.

[0088] In some embodiments, when the controller controls switches S1, S4, S6, and S7 to close and the remaining switches to open, the high-voltage capacitor C1 and the low-voltage capacitor C2 in the energy harvesting device are connected to the integrating circuit. This makes C1 and C2 capacitor elements of the integrating circuit, with one end of the integrating circuit connected to the energy harvesting device and the other end connected to the controller.

[0089] In some embodiments, AC power supply AC2 starts supplying power to the integrating circuit with a given input voltage V0. The integrating circuit consists of a first resistor R1 and a first capacitor C3. When the first AC power supply AC2 is turned on, current flows through R1 to charge C3, and the voltage of C3 gradually increases over time.

[0090] In some embodiments, the first voltage comparator circuit consists of three parallel voltage comparator circuits, which are compared with the output of the integrator circuit and the reference voltage Vref1, respectively. As time progresses, the output voltage V1 of the integrator circuit gradually increases.

[0091] In some embodiments, when the output voltage V1 of the integrator circuit reaches or exceeds the reference voltage Vref1, the corresponding voltage comparator circuit will output a high voltage signal; otherwise, it will output a low voltage signal. If the first voltage comparator circuit outputs a high voltage signal, it indicates that Vref1 is greater than V1, which means the capacitor value in the power harvesting device is 10nF. If the first voltage comparator circuit outputs a low voltage signal, it indicates that Vref1 is less than V1, which means the capacitor value in the power harvesting device is 5nF.

[0092] In some embodiments, the controller can determine the capacitance value of the energy harvesting device based on the output signal of the first voltage comparison circuit. In this way, the controller achieves non-contact detection of the capacitance value of the energy harvesting device.

[0093] Thus, by providing a non-contact capacitance detection method, and through an integrating circuit and a voltage comparison circuit, accurate identification of the capacitance value of the energy harvesting device is achieved. By controlling the states of switches S1, S4, S6, and S7, the capacitor of the energy harvesting device is used as a component of the integrating circuit, and powered by the first AC power supply AC2, achieving flexible circuit configuration and power management. After the circuit is operating, by comparing the output voltage V1 of the integrating circuit with the reference voltage Vref1, the capacitance value of the energy harvesting device can be accurately determined, thereby identifying the type of energy harvesting device. This design not only improves the accuracy and reliability of detection but also reduces detection costs and increases detection efficiency, possessing broad application prospects and practical value.

[0094] In some embodiments, see Figure 3 Then the controller controls switches S1, S4, S6, and S7 to open, and then controls switches S2, S3, S5, S8, and S9 to close, while all other switches are opened. This allows capacitor C3 to be used as the capacitor in the integrating circuit and connected to the integrating circuit. It also enables the transformer output of the energy harvesting device to supply power to the integrating circuit, and connects the two ends of the second voltage comparison circuit to the integrating circuit and the controller, respectively.

[0095] In some embodiments, the controller first opens switches S1, S4, S6, and S7 via control signals. These switches may be used to isolate or select different circuit paths. Next, the controller closes switches S2, S3, S5, S8, and S9. Closing these switches establishes new circuit connections, connecting specific components into the circuit. Capacitor C3 is connected to the circuit as a capacitor in the integrator circuit. An integrator circuit is a basic analog circuit that integrates the input signal. When S2, S3, S5, S8, and S9 are closed, capacitor C3 is connected to the integrator circuit, ready for integration.

[0096] In some embodiments, the transformer output of the energy harvesting device is connected to the integrator circuit, providing energy (voltage and current) to drive the integrator circuit. The transformer may obtain energy from an external power source (such as AC power) and convert it to a small voltage suitable for the integrator circuit's operation. A second voltage comparator circuit is connected to both the integrator circuit and the controller. The voltage comparator circuit compares two voltage values ​​and outputs a signal indicating which voltage is higher. Through this connection, the controller can monitor the output voltage of the integrator circuit and adjust the circuit state or perform other control operations as needed.

[0097] In some embodiments, see Figure 3After the circuit starts working, the output terminal of the transformer of the energy harvesting device inputs an unknown voltage V0 to the integrating circuit, and the integrating circuit outputs a voltage V1. After comparing the voltage V1 with Vref2 (the voltage equal to 0) of the second voltage comparison circuit, if the second voltage comparison circuit outputs a high voltage signal, it means that the voltage V1 is equal to 0, and thus the energy harvesting device is a DC energy harvesting device; if the second voltage comparison circuit outputs a low voltage signal, it means that the voltage V1 is greater than 0, and thus the energy harvesting device is an AC energy harvesting device.

[0098] In some embodiments, the controller sends signals to the individual switches, operating their states as needed. The controller ensures that switches S1, S4, S6, and S7 are in the open state. This may be to isolate or prevent other circuit parts from interfering with the current integrating circuit. The controller then closes switches S2, S3, S5, S8, and S9 to establish the required circuit path. Capacitor C3 is connected to the integrating circuit, becoming its integrating capacitor. In the integrating circuit, capacitor C3 is typically connected in series with a resistor R, with a voltage V0 input across the resistor. The transformer output of the power harvesting device is connected to the integrating circuit, providing the necessary voltage and current to enable its operation. One input of a second voltage comparator circuit is connected to the output of the integrating circuit, and the other input is connected to the controller (or a reference voltage source, such as Vref2). In this example, Vref2 is set to 0V as the comparison reference.

[0099] In some embodiments, once the circuit is configured, the transformer output of the energy harvesting device inputs an unknown voltage V0 to the integrator circuit. The output voltage V1 of the integrator circuit varies with time, and its rate of change depends on the input voltage V0 and the value of the integrating capacitor C3. The output voltage V1 of the integrator circuit is connected to one end of a second voltage comparator circuit, and the other end is connected to Vref2 (0V). The voltage comparator circuit compares the magnitudes of V1 and Vref2 and outputs a corresponding signal.

[0100] In some embodiments, once the circuit is configured, the transformer output of the energy harvesting device inputs an unknown voltage V0 to the integrator circuit. The output voltage V1 of the integrator circuit varies with time, and its rate of change depends on the input voltage V0 and the value of the integrating capacitor C3. The output voltage V1 of the integrator circuit is connected to one end of a second voltage comparator circuit, and the other end is connected to Vref2 (0V). The voltage comparator circuit compares the magnitudes of V1 and Vref2 and outputs a corresponding signal.

[0101] In some embodiments, if the voltage comparator circuit outputs a high voltage signal, it indicates that V1 equals 0V, which means that the input voltage V0 is a DC voltage, and therefore the power harvesting device is DC. If the voltage comparator circuit outputs a low voltage signal, it indicates that V1 is greater than 0V, which means that the input voltage V0 is an AC voltage, and therefore the power harvesting device is AC.

[0102] Thus, by disconnecting unnecessary switches and closing specific switches, the circuit successfully configured capacitor C3 as the core component of the integrator circuit. Simultaneously, it ensured that the transformer output of the power harvester could provide a stable power supply to the integrator circuit. Furthermore, connecting the second voltage comparator circuit to the integrator circuit and the controller enabled the detection of the power harvester type by comparing the output voltage V1 of the integrator circuit with the zero voltage Vref2. This not only optimized the circuit's connectivity but also improved its sensitivity to voltage signals. Ultimately, the circuit can quickly and accurately distinguish whether the power harvester is DC or AC based on the output signal of the voltage comparator circuit. This detection mechanism provides crucial information for further processing and decision-making, enhancing the circuit's practicality and reliability.

[0103] In some embodiments, see Figure 3 If the energy harvesting device is AC, the controller controls switches S2, S3, S5, S8, and S9 to open, and then controls switches S2, S3, S5, S10, and S11 to close, while all other switches are open. This allows capacitor C3 to be used as the capacitor in the integrating circuit and connected to the integrating circuit. It also allows the transformer output of the energy harvesting device to supply power to the integrating circuit, and connects the two ends of the third voltage comparison circuit to the integrating circuit and the controller, respectively.

[0104] In some embodiments, the controller first disconnects the previously closed switches S8 and S9, as well as another switch S10 and S11, to ensure that these switches do not interfere with subsequent circuit operation. Then, the controller closes switches S2, S3, S5, and the newly added S10 and S11, while keeping S8 and S9 open. This is done to change the circuit connection to suit the characteristics of the AC power source. Capacitor C3 continues to be connected in the circuit as the capacitor for the integrator. Due to the closure of switches S2, S3, and S5, capacitor C3 is connected to the integrator, ready for integration. The transformer output of the power source continues to power the integrator, ensuring that the integrator can process the input voltage signal. A third voltage comparator circuit is introduced, with its two ends connected to the output of the integrator and the controller (or another reference voltage source), respectively. This comparator circuit monitors and compares the output voltage of the integrator. When the power source is AC, the transformer output voltage V0 is alternating. This means that the integrator will continuously integrate and discharge the input signal, causing the output voltage V1 of the integrator to change over time. Due to the characteristics of AC voltage, the output voltage V1 of the integrator circuit will not stabilize at a fixed value, but will fluctuate around a certain average value. The third voltage comparator circuit compares V1 with a set value (which may be 0V or another reference voltage). Based on the comparison result, the controller can obtain information about the output characteristics of the integrator circuit. If necessary, the controller can further adjust circuit parameters or execute other control actions based on the output signal of the third voltage comparator circuit to adapt to changes in the AC signal.

[0105] Thus, through precise adjustment of the switching states by the controller, this circuit design exhibits excellent adaptability and flexibility, especially when handling AC power sources. When the power source is AC, the controller's operation ensures that capacitor C3 can be smoothly connected to the integrator circuit, while the transformer output provides the necessary power to the integrator circuit. This configuration not only maintains the stability of the integrator circuit but also allows it to correctly process alternating signals. Furthermore, the inclusion of a third voltage comparator circuit enables the system to monitor the output voltage of the integrator circuit in real time and perform corresponding analysis and control based on voltage changes. This design effectively improves the circuit's ability to identify different types of energy sources, optimizes the system's response speed and accuracy, provides reliable assurance for subsequent signal processing and decision-making, and ultimately enhances the overall system's stability and functional versatility.

[0106] In some embodiments, see Figure 3After the circuit starts working, the transformer output terminal of the energy harvesting device inputs an unknown voltage V0 to the integrating circuit, and the integrating circuit outputs a voltage V1. After comparing the voltage V1 with Vref3 of the third voltage comparison circuit, if the third voltage comparison circuit outputs a high voltage signal, it means that the reference voltage Vref3 is greater than the voltage V1, and thus it means that the energy harvesting device is a 6V energy harvesting device; if the third voltage comparison circuit outputs a low voltage signal, it means that the reference voltage Vref3 is less than the voltage V1, and thus it means that the energy harvesting device is a 27V energy harvesting device.

[0107] In some embodiments, the integrator circuit receives an unknown voltage V0 output from the transformer of the energy harvesting device as input. Over time, the integrator circuit integrates V0, and its output voltage V1 increases linearly with the integration time. A third voltage comparator circuit compares the output voltage V1 of the integrator circuit with a preset reference voltage Vref3. Vref3 is a known value, preset to a certain voltage level, such as 6V or 27V, used to identify the output voltage of the energy harvesting device.

[0108] In some embodiments, when the output voltage V1 of the integrating circuit is compared with the reference voltage Vref3, the voltage comparator circuit outputs a signal based on the comparison result. If the third voltage comparator circuit outputs a high voltage signal, it indicates that V1 is less than Vref3. In this case, if Vref3 is set to 6V, then this result means that the output voltage of the power harvesting device is 6V. Conversely, if the third voltage comparator circuit outputs a low voltage signal, it indicates that V1 is greater than Vref3. In this case, if Vref3 is set to 27V, then this result means that the output voltage of the power harvesting device is 27V.

[0109] In some embodiments, assuming Vref3 is set to 6V, when the power harvester outputs 6V, after processing by the integrating circuit, the output voltage V1 reaches 6V at a certain point in time. If V1 remains below or equal to 6V, the voltage comparator circuit will output a high-voltage signal, indicating that V1 is less than or equal to Vref3, thus determining that the power harvester is of the 6V type. Assuming Vref3 is set to 27V, when the power harvester outputs 27V, the output voltage V1 of the integrating circuit will rapidly rise and exceed 27V. In this case, the voltage comparator circuit will output a low-voltage signal, indicating that V1 is greater than Vref3, thus determining that the power harvester is of the 27V type.

[0110] In some embodiments, see Figure 3 If the energy harvesting device is DC, the controller controls switches S2, S3, S5, S10, and S11 to open, and then controls switches S2, S12, and S13 to close, while all other switches are opened, thereby connecting the two ends of the second comparator circuit to the transformer output terminal and the controller, respectively.

[0111] In some embodiments, the controller first disconnects switches S3, S5, S10, and S11, which may have previously been used for circuit connections of the AC power source. Then, the controller closes switch S2 and the newly added switches S12 and S13. Closing S2 maintains the connection of capacitor C3 to the integrator circuit, while closing S12 and S13 establishes a new circuit path adapted to the characteristics of the DC power source. The two ends of the second comparator circuit are connected to the transformer output and the controller, respectively. This means that the second comparator circuit directly monitors the DC voltage output by the transformer. Since it is a DC voltage, integration is not required, and the voltage magnitude can be directly detected by the comparator circuit. The comparator terminal of the second comparator circuit receives the DC voltage from the transformer output and compares it with a preset reference voltage. The controller determines whether the DC voltage output by the transformer matches expectations based on the output signal of the second comparator circuit.

[0112] In some embodiments, see Figure 3 After the circuit is working, the transformer output terminal of the power harvesting device inputs an unknown voltage V0 to the second comparison circuit. If the second comparison circuit outputs a high voltage signal, it means that the reference voltage Vref4 is greater than the voltage V0, and thus the power harvesting device is a 6V power harvesting device. If the second comparison circuit outputs a low voltage signal, it means that the reference voltage Vref4 is less than the voltage V0, and thus the power harvesting device is a 27V power harvesting device.

[0113] In some embodiments, closing S2 ensures that capacitor C3 remains part of the integrating circuit; however, in this configuration, the integrating circuit may not be used because DC voltage detection typically does not require integration. The second comparator circuit detects the DC voltage output by the transformer. Its output signal indicates the relationship between the transformer output voltage and a reference voltage (i.e., higher, lower, or equal to the reference voltage). The controller executes corresponding control logic based on the output signal of the second comparator circuit. For example, if the output signal indicates that the transformer output voltage is too high or too low, the controller may adjust circuit parameters or implement protective measures.

[0114] In some embodiments, Vref1 is located between and Between; Vref3 is between and Between; Vref4 is between 6v and 27v.

[0115] In some embodiments, the controller outputs corresponding detection logic based on information recorded internally: 10nf or 5nf, DC or AC, 6V or 27V. For example, for a power harvesting device with 10nf, AC, and 27V, the controller outputs its corresponding detection logic, enabling the detection device to detect the power harvesting device according to the detection logic.

[0116] This utility model embodiment provides a detection circuit for an energy harvesting device, including:

[0117] An integrating circuit, one end of which is electrically connected to the energy harvesting device;

[0118] A first comparator circuit, one end of which is electrically connected to the other end of the integrator circuit;

[0119] A second comparison circuit, one end of which is electrically connected to the other end of the energy harvesting device;

[0120] The controller is electrically connected to the other end of the first comparison circuit and the second comparison circuit, respectively.

[0121] The aforementioned first comparison circuit includes a first voltage comparison circuit, a second voltage comparison circuit, and a third voltage comparison circuit, which are connected in parallel. One end of the first voltage comparison circuit is electrically connected to the other end of the integrator circuit, and the other end of the first voltage comparison circuit is electrically connected to the controller. One end of the second voltage comparison circuit is electrically connected to the other end of the integrator circuit, and the other end of the second voltage comparison circuit is electrically connected to the controller. One end of the third voltage comparison circuit is electrically connected to the other end of the integrator circuit, and the other end of the third voltage comparison circuit is electrically connected to the controller.

[0122] The aforementioned first voltage comparison circuit includes: a first voltage comparator, the first terminal of which is electrically connected to the controller via a first switch S7; a first input branch, the first terminal of which is electrically connected to the second terminal of the first voltage comparator, and the second terminal of which is connected to a first reference voltage terminal Vref1; and a second input branch, the first terminal of which is electrically connected to the third terminal of the first voltage comparator, and the second terminal of which is electrically connected to the integrator circuit via a second switch S6.

[0123] The aforementioned second voltage comparison circuit includes: a second voltage comparator, the first terminal of which is electrically connected to the controller via a third switch S9; a third input branch, the first terminal of which is electrically connected to the second terminal of the second voltage comparator, and the second terminal of which is electrically connected to the integrator circuit via a fourth switch S8; and a fourth input branch, the first terminal of which is electrically connected to the third terminal of the second voltage comparator, and the second terminal of which is grounded.

[0124] The aforementioned third voltage comparison circuit includes: a third voltage comparator, the first terminal of which is electrically connected to the controller via a fifth switch S11; a fifth input branch, the first terminal of which is electrically connected to the second terminal of the third voltage comparator, and the second terminal of which is electrically connected to the integrator circuit via a sixth switch S10; and a sixth input branch, the first terminal of which is electrically connected to the third terminal of the third voltage comparator, and the second terminal of which is connected to a second reference voltage terminal.

[0125] The aforementioned second comparison circuit includes: a fourth voltage comparator, the first terminal of which is electrically connected to the controller via a seventh switch S13; a seventh input branch, the first terminal of which is electrically connected to the second terminal of the fourth voltage comparator, and the second terminal of which is electrically connected to the energy harvesting device via an eighth switch S12; and an eighth input branch, the first terminal of which is electrically connected to the third terminal of the fourth voltage comparator, and the second terminal of which is connected to a third reference voltage terminal.

[0126] The aforementioned integrating circuit includes: a fifth voltage comparator, the first terminal of which is electrically connected to the first comparator circuit, and the second terminal of which is grounded to GND4; a first resistor R1, one end of which is electrically connected to the third terminal of the fifth voltage comparator, and the second terminal of which is electrically connected to the first AC power supply AC2 through a ninth switch S4; and a first capacitor C3, which is connected in series with a tenth switch S3 between the first and third terminals of the fifth voltage comparator.

[0127] The aforementioned energy harvesting device includes: an eleventh switch S1, one end of which is electrically connected to the third terminal of the fifth voltage comparator; a second capacitor C1 and a third capacitor C2, one end of the second capacitor C1 being connected to the other end of the eleventh switch S1, and the other end of the second capacitor C1 being connected to the first terminal of the fifth voltage comparator through the third capacitor C2; a transformer, the transformer including a first coil and a second coil, one end of the first coil being connected to the connection point of the second and third capacitors through a first inductor, and the other end of the first coil being connected to the end of the third capacitor C2 away from the connection point; and a rectifier module, the first terminal of which is electrically connected to the second coil, and the second terminal of which is electrically connected to the second comparator circuit through an eighth switch S12.

[0128] The second comparison circuit is connected to the other end of the first resistor R1 via the twelfth switch S5.

[0129] The aforementioned energy harvesting device further includes: a second AC power source, which is connected in parallel with the second capacitor and the third capacitor connected in series via a thirteenth switch S2.

[0130] In summary, the embodiments of this utility model have the following beneficial effects:

[0131] (1) The detection circuit of the energy harvesting device integrates an integrator circuit, a first comparator circuit, a second comparator circuit, and a controller. The integrator circuit can accurately integrate the input voltage of the energy harvesting device, which helps to extract key information from complex signals. The first comparator circuit, connected to the input terminal of the integrator circuit, can detect and compare the integrated voltage in real time to identify the type of energy harvesting device. The second comparator circuit is connected to the other end of the energy harvesting device to provide real-time data of the output voltage of the energy harvesting device. The controller, connected to the first and second comparator circuits, can make rapid responses and adjustments based on the comparison results, thereby enhancing the adaptability of the detection circuit to different energy harvesting devices. Thus, it is not necessary to detect the energy harvesting device by manual inspection. It can adapt to the rapidly changing operating state of the energy harvesting device, thereby effectively improving the detection accuracy of the energy harvesting device.

[0132] (2) The detection circuit provided in this embodiment of the present invention, through its unique modular design, achieves efficient monitoring and precise control of the output signal of the energy harvesting device, bringing significant beneficial effects. The application of the integrating circuit effectively smooths the output of the energy harvesting device, improves the stability of the signal, and provides a solid foundation for the subsequent comparison circuit. The three voltage comparison circuits connected in parallel in the first comparison circuit not only improve the flexibility of the circuit in detecting different thresholds, but also enhance the response speed and accuracy of the circuit. In particular, the design of the second voltage comparison circuit, through the intelligent control of the third switch (S9) and the fourth switch (S8), and the precise adjustment of resistors (R4) and (R5), achieves a fine comparison of the output signal of the integrating circuit, thereby ensuring the reliability of the detection results. This circuit structure not only optimizes the performance of the system, but also reduces maintenance costs and failure risks, and improves the stability and safety of the entire system, which is of great significance for ensuring the normal operation of the power system and improving energy management efficiency.

[0133] (3) The introduction of the integrator circuit effectively smooths the signal output from the energy harvesting device, reduces signal noise, and improves signal stability, providing a reliable input signal for the subsequent comparison circuit. Secondly, the three voltage comparison circuits connected in parallel in the first comparison circuit can simultaneously detect different thresholds, which not only improves the accuracy of detection but also enhances the circuit's adaptability to different operating conditions. In addition, the second comparison circuit directly monitors the output of the energy harvesting device, ensuring the system's real-time performance and safety. Specifically, in the third voltage comparison circuit, through the flexible control of the fifth switch (S11) and the sixth switch (S10), and the fine adjustment of resistors (R6) and (R7), the circuit can accurately compare the output signal of the integrator circuit with the reference voltage, thereby achieving precise differentiation of signal states. This design enables the detection circuit to not only respond quickly but also maintain high stability in complex signal environments.

[0134] (4) The direct connection between the integrating circuit and the energy harvesting device ensures the timeliness and accuracy of signal processing. The three parallel voltage comparators in the first comparator circuit provide multiple detection capabilities for different thresholds, enhancing the flexibility and reliability of the circuit. The design of the second comparator circuit, especially the introduction of the fourth voltage comparator, through the ingenious control of the seventh switch (S13) and the eighth switch (S12), and the fine adjustment of resistors (R9) and (R8), achieves accurate monitoring of the output of the energy harvesting device. This design not only improves the detection accuracy of the system but also optimizes the response speed and reduces the system failure rate, thereby improving the stability and safety of the entire system. In summary, the beneficial effects of this detection circuit are reflected in improved signal processing efficiency, reduced possibility of erroneous judgments, and more reliable support for energy management and power system operation.

[0135] (5) Improved the accuracy of signal processing. By using integrator circuits and filtering components, signal noise was effectively reduced, ensuring signal stability and reliability. Enhanced the system's detection capability. The parallel voltage comparison circuit in the first comparison circuit allows for simultaneous detection of multiple thresholds, improving detection flexibility and response speed. Optimized the system's control strategy. The controller performs precise control based on the output signal of the comparison circuit, realizing real-time adjustment and optimization of the system state. Improved the system's stability and reliability. Through refined circuit design, the system can better cope with external interference, reducing misjudgments and faults, thereby ensuring long-term stable operation of the system.

[0136] (6) By organically combining multiple modules such as the integrating circuit, the comparison circuit, and the controller, the accuracy and efficiency of detection are greatly improved. The electrical connection between the integrating circuit and the energy harvesting device ensures that the circuit can obtain sufficient energy from the energy harvesting device, maintaining the stability of circuit operation. The setting of the first comparison circuit and the second comparison circuit enables the circuit to perform multi-faceted comparisons, improving the comprehensiveness of detection. In addition, the parallel connection of the three voltage comparison circuits inside the first comparison circuit enables the circuit to perform multi-channel voltage comparisons simultaneously, improving the detection speed. Through the optimized design of the energy harvesting device and the connection between the rectifier module and the comparison circuit, the energy utilization efficiency and detection accuracy of the circuit are further improved. This detection circuit improves detection efficiency and reduces energy consumption while ensuring detection accuracy, and has significant technical advantages. The circuit integrates the energy obtained by the energy harvesting device through the integrating circuit, then compares the output voltage of the integrating circuit and the energy harvesting device through two comparison circuits, and finally the controller performs logical processing and control on the comparison results. This design can improve the detection accuracy and stability of the circuit.

[0137] (7) The detection circuit provided in this embodiment of the present invention achieves accurate processing and efficient comparison of energy signals through the integration of an integrator circuit, multiple comparison circuits, and a flexible switching configuration. This design not only improves the accuracy and reliability of signal processing, but also enhances the circuit's ability to detect different voltage thresholds by connecting multiple voltage comparison circuits in parallel. In addition, the close connection between the integrator circuit and the energy harvesting device ensures real-time processing of energy signals, while the connection between the controller and the comparison circuit enables the circuit to respond quickly and make accurate judgments. Overall, the detection accuracy is improved, the false judgment rate is reduced, and the adaptability and flexibility of the circuit are also improved, making it suitable for energy detection and control applications in various complex environments.

[0138] (8) By integrating efficient energy harvesting, precise signal processing, and flexible logic control functions, high-precision detection and processing of energy signals are achieved. The close connection between the integrator circuit and the energy harvesting device ensures effective conversion and integration of energy signals, while the parallel connection of multiple voltage comparison circuits significantly improves the detection capability for different voltage thresholds, enhancing the circuit's adaptability and reliability. Furthermore, by introducing a second AC power supply and multiple switches, the circuit possesses the ability to adjust its operating state in varying environments, greatly improving the system's stability and robustness. Overall, these designs enable the detection circuit not only to accurately detect energy signals but also to flexibly adapt to various application requirements, thus possessing significant practical value in the field of energy harvesting and control.

[0139] The above description is merely an embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and scope of this utility model are included within the scope of protection of this utility model.

Claims

1. A detection circuit for an energy harvesting device, characterized in that, The detection circuit includes: An integrating circuit, one end of which is electrically connected to the energy harvesting device; A first comparator circuit, one end of which is electrically connected to the other end of the integrator circuit; A second comparison circuit, one end of which is electrically connected to the other end of the energy harvesting device; The controller is electrically connected to the other end of the first comparison circuit and the second comparison circuit, respectively.

2. The detection circuit according to claim 1, characterized in that, The first comparison circuit includes a first voltage comparison circuit, a second voltage comparison circuit, and a third voltage comparison circuit, wherein the first voltage comparison circuit, the second voltage comparison circuit, and the third voltage comparison circuit are connected in parallel; One end of the first voltage comparison circuit is electrically connected to the other end of the integration circuit, and the other end of the first voltage comparison circuit is electrically connected to the controller. One end of the second voltage comparison circuit is electrically connected to the other end of the integration circuit, and the other end of the second voltage comparison circuit is electrically connected to the controller; One end of the third voltage comparison circuit is electrically connected to the other end of the integrator circuit, and the other end of the third voltage comparison circuit is electrically connected to the controller.

3. The detection circuit according to claim 2, characterized in that, The first voltage comparison circuit includes: A first voltage comparator, the first terminal of which is electrically connected to the controller via a first switch (S7); The first input branch has a first terminal electrically connected to the second terminal of the first voltage comparator, and the second terminal of the first input branch is connected to the first reference voltage terminal (Vref1). The second input branch has its first end electrically connected to the third end of the first voltage comparator, and its second end electrically connected to the integrator circuit via the second switch (S6).

4. The detection circuit according to claim 2, characterized in that, The second voltage comparator circuit includes: A second voltage comparator, the first terminal of which is electrically connected to the controller via a third switch (S9); The third input branch has its first terminal electrically connected to the second terminal of the second voltage comparator, and its second terminal electrically connected to the integrating circuit via a fourth switch (S8). The fourth input branch has its first terminal electrically connected to the third terminal of the second voltage comparator, and its second terminal grounded.

5. The detection circuit according to claim 2, characterized in that, The third voltage comparison circuit includes: A third voltage comparator, the first terminal of which is electrically connected to the controller via a fifth switch (S11); The fifth input branch has its first terminal electrically connected to the second terminal of the third voltage comparator, and its second terminal electrically connected to the integrating circuit via a sixth switch (S10). The sixth input branch has its first terminal electrically connected to the third terminal of the third voltage comparator, and its second terminal connected to the second reference voltage terminal (Vref3).

6. The detection circuit according to claim 1, characterized in that, The second comparator circuit includes: A fourth voltage comparator, the first terminal of which is electrically connected to the controller via a seventh switch (S13); The seventh input branch has its first end electrically connected to the second end of the fourth voltage comparator, and its second end electrically connected to the energy harvesting device via the eighth switch (S12). The eighth input branch has its first terminal electrically connected to the third terminal of the fourth voltage comparator, and its second terminal connected to the third reference voltage terminal (Vref4).

7. The detection circuit according to claim 1, characterized in that, The integrating circuit includes: A fifth voltage comparator, wherein the first terminal of the fifth voltage comparator is electrically connected to the first comparator circuit, and the second terminal of the fifth voltage comparator is grounded (GND4); The first resistor (R1) has one end electrically connected to the third terminal of the fifth voltage comparator, and the second end of the first resistor is electrically connected to the first AC power supply (AC2) through the ninth switch (S4). The first capacitor (C3) is connected in series with the tenth switch (S3) between the first and third terminals of the fifth voltage comparator.

8. The detection circuit according to claim 7, characterized in that, The energy harvesting device includes: Eleventh switch (S1), one end of which is electrically connected to the third end of the fifth voltage comparator; The second capacitor (C1) and the third capacitor (C2) are connected, with one end of the second capacitor (C1) connected to the other end of the eleventh switch (S1) and the other end of the second capacitor (C1) connected to the first end of the fifth voltage comparator through the third capacitor (C2). A transformer, comprising a first coil and a second coil, wherein one end of the first coil is connected to the connection point of a second capacitor and a third capacitor via a first inductor, and the other end of the first coil is connected to the end of the third capacitor (C2) away from the connection point.

9. The detection circuit according to claim 8, characterized in that, The second comparator circuit is connected to the other end of the first resistor (R1) via the twelfth switch (S5).

10. The detection circuit according to claim 8, characterized in that, The energy harvesting device further includes: The second AC power source is connected in parallel with the second and third capacitors, which are connected in series, via the thirteenth switch (S2).

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