Adaptive regulation circuit and method based on cycle period of dual-delay relay

Abstract

The present invention provides an adaptive regulation circuit and method for a cycle based on a dual delay relay. The adaptive regulation circuit uses two delay relays as the core, constructs an interlocking control logic, and forms a closed-loop trigger mechanism; and outputs a cycle control signal through a low-cost circuit. The adaptive regulation method calculates the delay time adjustment amount of the delay relay in real time based on the dynamically monitored load current and ambient temperature, based on preset fuzzy logic control or feedback control, and then determines the delay time of the delay relay in combination with the target output frequency; according to the delay time of the delay relay, the adjustable rheostat set in the delay adjustment unit is automatically adjusted to achieve the frequency and duty cycle of the adaptive regulation cycle. In addition, the accuracy of intelligent control is improved through the temperature compensation mechanism; and the reliability of intelligent control is improved through the abnormality detection and protection mechanism.

Description

Technical Field

[0001] The present invention belongs to the field of time delay relays. More specifically, the present invention discloses a self-adaptive regulation circuit and method based on a cycle period of a dual time delay relay. Background Art

[0002] In the field of industrial automation and electrical control, time delay relays are widely used in scenarios such as equipment start and stop, cycle control, etc. In existing technologies, cycle control mainly relies on two types of solutions:

[0003] The first approach is to use a dedicated time-delay relay with a single cyclic control function. While dedicated cyclic control relays simplify circuit design, their customization makes them expensive. Furthermore, their closing and opening times are typically not independently adjustable. In other words, they only support fixed output frequencies and duty cycles, making them difficult to meet the needs of scenarios requiring differentiated time settings, such as gradual control. Furthermore, these relays lack adaptive regulation capabilities and cannot dynamically optimize cycle parameters based on load fluctuations or ambient temperature changes, leading to low energy efficiency and the risk of equipment overload.

[0004] The second approach is to design complex sequential logic using a programmable logic controller (PLC) or microprocessor. While these methods achieve high-precision control, they rely on software programming and complex peripheral circuitry, resulting in high costs and high maintenance requirements. In harsh industrial environments, electronic components lack robustness against interference, making timing disruptions easily caused by electromagnetic noise or temperature drift.

[0005] Existing loop control technologies have significant limitations in terms of high cost, low flexibility, lack of adaptability and insufficient scalability. Therefore, a low-cost, highly reliable solution that supports intelligent regulation is urgently needed. Summary of the Invention

[0006] In view of the above problems, the purpose of the present invention is to provide an adaptive regulation circuit and method for the cycle period based on dual delay relays. The adaptive regulation circuit takes two delay relays as the core, constructs interlocking control logic, and forms a closed-loop trigger mechanism; and outputs the cycle period control signal through a low-cost circuit. The adaptive regulation method calculates the delay time adjustment amount of the delay relay in real time based on the dynamically monitored load current and ambient temperature, based on the preset fuzzy logic control or feedback control, and then determines the delay time of the delay relay in combination with the target output frequency; according to the delay time of the delay relay, the adjustable rheostat set in the delay adjustment unit is automatically adjusted to achieve the frequency and duty cycle of the adaptive regulation cycle period. In addition, the accuracy of intelligent control is improved by the temperature compensation mechanism; and the reliability of intelligent control is improved by the abnormality detection and protection mechanism.

[0007] In order to achieve the above object, the first aspect of the present invention provides an adaptive regulation circuit based on the cycle period of a dual-delay relay, the circuit comprising:

[0008] Processor, cycle output module, electrical parameter detection module and delay adjustment module;

[0009] The cycle output module includes a first time delay relay and a second time delay relay;

[0010] The normally closed switch of the first time delay relay is connected to the output control terminal, the normally open switch of the first time delay relay is connected to the control coil of the second time delay relay, and the normally closed switch of the second time delay relay is connected to the control coil of the first time delay relay;

[0011] The electrical parameter detection module is used to detect electrical parameters of the regulating circuit, including at least the current value of the output control terminal and the temperature value of the regulating circuit;

[0012] The delay adjustment module is used to adjust the trigger delay time of the first delay relay and the second delay relay;

[0013] The processor collects the electrical parameters of the circuit through the electrical parameter detection module and adjusts the trigger delay time of the delay relay through the delay adjustment module.

[0014] In this solution, the first time delay relay further includes a single-pole double-throw switch of the same source, specifically:

[0015] The common end of the homologous single-pole double-throw switch is connected to the positive electrode of the output control power supply;

[0016] The normally closed end of the homologous single-pole double-throw switch is connected to the output control end, and then connected to the negative electrode of the output control power supply;

[0017] The normally open end of the same-source single-pole double-throw switch is connected to the control coil of the second time delay relay, and then connected to the negative electrode of the output control power supply.

[0018] In this solution, the first time delay relay further includes a double-pole double-throw switch of a different source, specifically:

[0019] The normally closed switch of the heterogeneous double-pole double-throw switch includes a first end and a second end;

[0020] The first end is connected to the positive electrode of the output control power supply;

[0021] The second end is connected to the output control end, and further connected to the negative electrode of the output control power supply;

[0022] The normally open switch of the heterogeneous double-pole double-throw switch includes a third terminal and a fourth terminal;

[0023] The third end is connected to the positive electrode of the coil control power supply;

[0024] The fourth end is connected to the control coil of the second time delay relay and then connected to the negative electrode of the output control power supply.

[0025] In this solution, the delay adjustment module specifically includes:

[0026] a first delay adjustment unit and a second delay adjustment unit;

[0027] The first delay adjustment unit and the second delay adjustment unit are both provided with an adjustable rheostat for adjusting the trigger delay time of the delay relay;

[0028] The first delay adjustment unit is used to adjust the trigger delay time of the first delay relay;

[0029] The second delay adjustment unit is used to adjust the trigger delay time of the second delay relay.

[0030] A second aspect of the present invention further provides a method for adaptively adjusting the cycle period of a dual-delay relay, which is applied to any of the above-mentioned adaptive adjustment circuits for the cycle period of a dual-delay relay, and the method comprises:

[0031] Acquiring first current information of the output control terminal and first temperature information of the regulating circuit;

[0032] It is expected that a preset first adjustment amount algorithm obtains a first time adjustment amount and a second time adjustment amount according to the first current information and the first temperature information;

[0033] Acquire first time information of the first time delay relay and second time information of the second time delay relay;

[0034] updating the first time information according to the first time adjustment amount, and updating the second time information according to the second time adjustment amount;

[0035] Obtaining target duty cycle information according to the first time information and the second time information;

[0036] Based on preset target frequency information and according to the target duty cycle information, adjusting the first time information and the second time information;

[0037] adjusting a first delay adjustment unit of a delay adjustment module according to the first time information;

[0038] The second delay adjustment unit of the delay adjustment module is adjusted according to the second time information.

[0039] In this solution, the first adjustment algorithm is also a fuzzy logic control algorithm, specifically:

[0040] Obtain rated current information and rated temperature information;

[0041] Based on the rated current information, a five-level current interval set is obtained;

[0042] Based on the rated temperature information, a five-level temperature interval set is obtained;

[0043] Based on the five-level current interval set, and according to the first current information, a current adjustment level is obtained;

[0044] Based on the five-level temperature interval set, obtaining a temperature adjustment level according to the first temperature information;

[0045] According to the current adjustment level and the temperature adjustment level, a preset adjustment correspondence table is searched to obtain a first time adjustment amount and a second time adjustment amount.

[0046] In this solution, the first adjustment algorithm is also included as a first feedback control algorithm, specifically:

[0047] Obtain rated current information and rated temperature information;

[0048] Calculating a difference between the first current information and the rated current information to obtain current deviation information;

[0049] Calculating a difference between the first temperature information and the rated temperature information to obtain temperature deviation information;

[0050] Obtaining a proportional control amount according to the current deviation information and the temperature deviation information and a proportional weight;

[0051] Obtaining an integral control amount according to the integral value of the current deviation information and the integral value of the temperature deviation information and the integral weight;

[0052] A feedback control amount is obtained according to the proportional control amount and the integral control amount, and is used to obtain a first time adjustment amount and a second time adjustment amount.

[0053] This plan also includes:

[0054] Obtaining current fluctuation frequency information based on the first current information based on discrete Fourier transform;

[0055] Determining whether the current fluctuation frequency information is greater than a preset first fluctuation frequency threshold;

[0056] If so, the integral weight is adjusted downward;

[0057] If not, determining whether the current fluctuation frequency information is less than a preset second fluctuation frequency threshold;

[0058] If so, the integral weight is adjusted upward.

[0059] This solution also includes a temperature compensation mechanism, specifically:

[0060] When the first temperature information is greater than a preset first temperature threshold, temperature compensation is triggered;

[0061] Determining whether the first temperature information is lower than a preset second temperature threshold;

[0062] If yes, performing interpolation compensation on the first time adjustment amount and the second time adjustment amount using a preset piecewise linear interpolation method;

[0063] If not, the first time adjustment amount and the second time adjustment amount are adjusted according to a preset dynamic compensation relationship.

[0064] This plan also includes:

[0065] If the first current information is greater than an overcurrent threshold or the first temperature information is greater than an overtemperature threshold, entering a protection mode;

[0066] The first time information is set to a minimum reference value;

[0067] The second time information is set to a maximum reference value;

[0068] If the protection mode duration exceeds the preset safety time threshold;

[0069] The output control power supply is disconnected and a fault code is sent.

[0070] The present invention provides an adaptive regulation circuit and method for a cycle based on a dual delay relay. The adaptive regulation circuit uses two delay relays as the core, constructs an interlocking control logic, and forms a closed-loop trigger mechanism; and outputs a cycle control signal through a low-cost circuit. The adaptive regulation method calculates the delay time adjustment amount of the delay relay in real time based on the dynamically monitored load current and ambient temperature, based on preset fuzzy logic control or feedback control, and then determines the delay time of the delay relay in combination with the target output frequency; according to the delay time of the delay relay, the adjustable rheostat set in the delay adjustment unit is automatically adjusted to achieve the frequency and duty cycle of the adaptive regulation cycle. In addition, the accuracy of intelligent control is improved through the temperature compensation mechanism; and the reliability of intelligent control is improved through the abnormality detection and protection mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope.

[0072] Figure 1 Shows a schematic structural diagram of a cycle-adaptive regulation circuit based on a dual-delay relay;

[0073] Figure 2 The following is a timing diagram showing the operation logic of the adaptive regulation circuit based on the cycle of the dual-delay relay provided by the embodiment of the present invention;

[0074] Figure 3 A circuit connection diagram of a homologous single-pole double-throw switch provided in an embodiment of the present invention is shown;

[0075] Figure 4 A circuit connection diagram of a heterogeneous double-pole double-throw switch provided in an embodiment of the present invention is shown;

[0076] Figure 5 A schematic diagram of a cycle adaptive adjustment method based on a dual-delay relay is shown;

[0077] Figure 6 shows an execution flow chart of the fuzzy logic control algorithm provided by an embodiment of the present invention;

[0078] Figure 7 The flowchart of the execution of the feedback control algorithm provided by the embodiment of the present invention is shown. DETAILED DESCRIPTION

[0079] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0080] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined in this manner in the embodiments of the present invention.

[0081] The words "first", "second" and similar terms used in the embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one", "an" or "the" do not indicate a quantity limitation, but rather indicate the existence of at least one. Similarly, words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The steps before or after the method of the embodiment of the present invention do not necessarily have to be performed in exact order. On the contrary, the various steps may be processed in reverse order or simultaneously. At the same time, other operations may be added to these processes, or one or more steps may be removed from these processes.

[0082] Please refer to Figure 1 , Figure 1 The schematic diagram shows a structure of a cycle-adaptive regulation circuit based on a dual-delay relay.

[0083] like Figure 1 As shown, the first aspect of the present invention discloses the cycle-adaptive regulation circuit 10 based on the dual-delay relay, the circuit comprising:

[0084] Processor 101, cycle output module 102, electrical parameter detection module 103 and delay adjustment module 104;

[0085] The cycle output module includes a first time delay relay and a second time delay relay;

[0086] The normally closed switch of the first time delay relay is connected to the output control terminal, the normally open switch of the first time delay relay is connected to the control coil of the second time delay relay, and the normally closed switch of the second time delay relay is connected to the control coil of the first time delay relay;

[0087] The electrical parameter detection module is used to detect electrical parameters of the regulating circuit, including at least the current value of the output control terminal and the temperature value of the regulating circuit;

[0088] The delay adjustment module is used to adjust the trigger delay time of the first delay relay and the second delay relay;

[0089] The processor collects the electrical parameters of the circuit through the electrical parameter detection module and adjusts the trigger delay time of the delay relay through the delay adjustment module.

[0090] It should be noted that after the adaptive cycle adjustment circuit based on the dual-delay relay is powered on and activated, the processor first configures the trigger delay time of the delay relay through the delay adjustment module, causing the cycle output module to output the cycle control signal. The processor then uses the electrical parameter detection module to detect the electrical parameters of the adaptive adjustment circuit; these electrical parameters include at least the output current value (i.e., the current value at the output control terminal) and the temperature value of the adaptive adjustment circuit. Finally, the processor adjusts the configuration parameters of the delay adjustment module to adjust the cycle control signal.

[0091] like Figure 2 As shown, Figure 2 The operating logic timing diagram of the adaptive regulation circuit based on the cycle of dual delay relays provided by an embodiment of the present invention is shown. K1 represents the working state of the first delay relay, and K2 represents the working state of the second delay relay; NC represents that the normally closed switch of the delay relay is in the on state, NO represents that the normally open switch of the delay relay is in the on state, and S represents that the delay relay is in the power-off switching state. L1 represents the on state of the control coil of the first delay relay, L2 represents the on state of the control coil of the second delay relay, and OUT represents the on state of the output control terminal; a low level represents the power-off state, and a high level represents the power-on state. T1 represents the trigger delay time of the first delay relay, and T2 represents the trigger delay time of the second delay relay, wherein the trigger delay time represents the time length from when the delay relay is powered on to when the switch completes the switching action; △t1 represents the switching delay time of the first delay relay, and △t2 represents the switching delay time of the second delay relay, wherein the switching delay time represents the time length from when the delay relay is powered off to when the switch completes the switching action. The operating logic of the cycle based on the dual-delay relay includes four stages: P_OFF ​​power-off stage, P_S startup stage, P_L output low level stage and P_H output high level stage.

[0092] P_OFF ​​power-off phase:

[0093] K1 and K2 are in the normally closed switch conduction state, and L1, L2 and OUT are not energized.

[0094] P_S startup phase:

[0095] After power is turned on, K1 is in NC state. At this time, the output control power is supplied to OUT through K1, then OUT is powered on and L2 is powered off; K2 is in NC state. The output control power is supplied to L1 through K2, then L1 is powered on and K1 starts the delay trigger;

[0096] After time T1, the first delay relay triggers the power-on switching operation, K1 is in the NO state, and the output control power is supplied to L2 through K1, then OUT is de-energized, L2 is energized, and K2 starts the delay trigger; because the second delay relay needs to be triggered with a delay, K2 is still in the NC state, and the output control power is supplied to L1 through K2, then L1 is energized; entering the P_L stage.

[0097] P_L outputs low level phase, that is, the low level phase of the cycle:

[0098] After time T2, the second delay relay triggers the power-on switching operation, K2 is in the NO state, and L1 is de-energized; because the first delay relay has a power-off switching delay, K1 is still in the NO state at this time, so L2 is energized and OUT is de-energized;

[0099] After time △t1, K1 switches to NC state, OUT is energized and L2 is de-energized; due to the power-off switching delay of the second delay relay, K2 is still in NO state, that is, L1 is de-energized; entering the P_H stage.

[0100] P_H outputs high level phase, that is, the high level phase of the cycle:

[0101] After time △t2, K2 switches to NC state, L1 is energized, and K1 starts the delay trigger; K1 remains in NC state, OUT is energized, and L2 is de-energized;

[0102] After time T1, the first delay relay triggers the power-on switching operation, K1 switches to the NO state, OUT is de-energized, L2 is energized, and K2 starts the delayed trigger; because the second delay relay needs to be delayed to trigger, K2 is still in the NC state, and the output control power is supplied to L1 through K2, so L1 is energized; entering the P_L stage.

[0103] In summary, after the P_S startup phase, the dual-delay relay switches cyclically between the P_L output low-level phase and the P_H output high-level phase, realizing the output of the cyclic period control signal; wherein, the duration of the cyclic period control signal low-level is T2 + △t1; the duration of the cyclic period control signal high-level is T1 + △t2. The duty cycle calculation formula is:

[0104] .

[0105] Please refer to Figure 3 , Figure 3 A circuit connection diagram of a homologous single-pole double-throw switch provided in an embodiment of the present invention is shown.

[0106] According to an embodiment of the present invention, Figure 3As shown, the first time delay relay also includes a single-pole double-throw switch of the same source, specifically:

[0107] The common terminal Dcom of the homologous single-pole double-throw switch K301 is connected to the positive electrode L of the output control power supply;

[0108] The normally closed terminal Dnc of the homologous single-pole double-throw switch K301 is connected to the output control terminal OUT, and then connected to the negative electrode N of the output control power supply;

[0109] The normally open end Dno of the homologous single-pole double-throw switch K301 is connected to the control coil L302 of the second delay relay, and then connected to the negative electrode N of the output control power supply.

[0110] It should be noted that the switch K302 of the second time delay relay and the control coil L301 of the first time delay relay. When the voltage of the output control signal is the same as the control voltage of the time delay relay, the switch of the first time delay relay can be a single-pole double-throw switch with the same source. In other words, the output control power supply simultaneously supplies power to the time delay relay and the output control terminal.

[0111] Please refer to Figure 4 , Figure 4 A circuit connection diagram of a heterogeneous double-pole double-throw switch provided by an embodiment of the present invention is shown.

[0112] According to an embodiment of the present invention, Figure 4 As shown, the first time delay relay also includes a double-pole double-throw switch of different sources, specifically:

[0113] The normally closed switch of the heterogeneous double-pole double-throw switch K401 includes a first terminal D1 and a second terminal D2;

[0114] The first end D1 is connected to the positive electrode L of the output control power supply;

[0115] The second end D2 is connected to the output control end OUT, and further connected to the output control power supply negative electrode N;

[0116] The normally open switch of the heterogeneous double-pole double-throw switch K401 includes a third terminal D3 and a fourth terminal D4;

[0117] The third end D3 is connected to the positive electrode L' of the coil control power supply;

[0118] The fourth end D4 is connected to the control coil L402 of the second delay relay, and then connected to the negative electrode N' of the output control power supply.

[0119] It should be noted that the switch K402 of the second time delay relay and the control coil L401 of the first time delay relay. When the voltage of the output control signal is the same as the control voltage of the time delay relay, the switch of the first time delay relay can be a double-pole double-throw switch with a different source. In other words, the relay control power supply and the output control power supply use different power supplies, thereby achieving control between different voltages. In practical applications, a low-voltage control of high-voltage is often used. For example, a 12V DC voltage is used to power a relay to control a 36V DC voltage or a 220V AC voltage output.

[0120] According to an embodiment of the present invention, the delay adjustment module specifically includes:

[0121] a first delay adjustment unit and a second delay adjustment unit;

[0122] The first delay adjustment unit and the second delay adjustment unit are both provided with an adjustable rheostat for adjusting the trigger delay time of the delay relay;

[0123] The first delay adjustment unit is used to adjust the trigger delay time of the first delay relay;

[0124] The second delay adjustment unit is used to adjust the trigger delay time of the second delay relay.

[0125] It should be noted that the delay adjustment module includes two delay adjustment units, one for adjusting the trigger delay of the first delay relay and the other for adjusting the trigger delay of the second delay relay. The delay adjustment units adjust the trigger delay by adjusting a digitally adjustable rheostat. In one embodiment, an RCL delay circuit is formed by connecting a resistor in series with a coil and then a capacitor in parallel to achieve the desired delay adjustment.

[0126] Please refer to Figure 5 , Figure 5 A flow chart of a method for adaptively adjusting a cycle period based on a dual-delay relay is shown.

[0127] like Figure 5 As shown, the second aspect of the present invention discloses a method for adaptively adjusting the cycle period based on the dual-delay relay, the method comprising:

[0128] S502, obtaining first current information of the output control terminal and first temperature information of the regulating circuit;

[0129] S504: Predicting a preset first adjustment value algorithm to obtain a first time adjustment value and a second time adjustment value according to the first current information and the first temperature information;

[0130] S506, obtaining first time information of the first delay relay and second time information of the second delay relay;

[0131] S508: Update the first time information according to the first time adjustment amount, and update the second time information according to the second time adjustment amount;

[0132] S510, obtaining target duty cycle information according to the first time information and the second time information;

[0133] S512, adjusting the first time information and the second time information according to the target duty cycle information based on preset target frequency information;

[0134] S514: Adjust the first delay adjustment unit of the delay adjustment module according to the first time information;

[0135] S516: Adjust the second delay adjustment unit of the delay adjustment module according to the second time information.

[0136] It should be noted that the first current information is the output current of the regulation circuit, that is, the current value provided to the load; the first temperature information is the temperature value of the regulation circuit; the first time adjustment amount is the adjustment amount of the trigger delay time of the first delay relay; the second time adjustment amount is the adjustment amount of the trigger delay time of the second delay relay; the first time information is the trigger delay time of the first delay relay; the second time information is the trigger delay time of the second delay relay; the target duty cycle information is the target duty cycle of the cycle control signal; the target frequency information is the target frequency of the cycle control signal.

[0137] In this embodiment, a cycle-adaptive adjustment process is provided for adaptively adjusting the delay time of a time delay relay based on electrical parameters of a control circuit, thereby adjusting the frequency and duty cycle of a cycle-adaptive control signal. First, a Hall effect sensor collects real-time current signals from the output control terminal, and a temperature sensor or thermistor circuit measures the temperature of the control circuit. Second, based on a preset fuzzy logic control algorithm or feedback control algorithm, an adjustment value for the trigger delay time of the time delay relay is calculated based on the real-time value and rated value of the electrical parameters. Then, the trigger delay time of the time delay relay is updated based on the adjustment value for the trigger delay time, and a target duty cycle of the cycle-adaptive control signal is calculated based on the updated first and second time information. Finally, the first and second time information are adjusted again based on the target frequency and target duty cycle of the cycle-adaptive control signal. Based on the adjusted first and second time information, a digitally adjustable resistor in the delay adjustment unit is adjusted according to preset communication instructions, thereby adjusting the trigger delay time of the time delay relay.

[0138] Please refer to Figure 6 , Figure 6 The flowchart of the execution of the fuzzy logic control algorithm provided by the embodiment of the present invention is shown.

[0139] In the embodiment of the present invention, Figure 6 As shown, the first adjustment algorithm is also included as a fuzzy logic control algorithm, specifically:

[0140] S602, obtaining rated current information and rated temperature information;

[0141] S604, obtaining a five-level current interval set based on the rated current information;

[0142] S606, obtaining a five-level temperature range set based on the rated temperature information;

[0143] S608, obtaining a current adjustment level based on the five-level current interval set and the first current information;

[0144] S610, obtaining a temperature adjustment level based on the five-level temperature interval set and the first temperature information;

[0145] S612: Search a preset adjustment correspondence table according to the current adjustment level and the temperature adjustment level to obtain a first time adjustment amount and a second time adjustment amount.

[0146] It should be noted that the rated current information is the target output current value of the regulation circuit; the rated temperature information is the target operating temperature value of the regulation circuit; the five-level current interval set is the five current intervals divided according to the rated current information; the five-level temperature interval set is the five temperature intervals divided according to the rated temperature information.

[0147] As an implementation method, this embodiment provides a fuzzy logic control algorithm for a first time adjustment amount and a second time adjustment amount, specifically: obtaining rated current information and rated temperature information to obtain a five-level current interval set and a five-level temperature interval set, respectively; combining the first current information and the first temperature information to obtain a current adjustment level and a temperature adjustment level, respectively; according to the current adjustment level and the temperature adjustment level, searching a preset adjustment correspondence table to obtain the first time adjustment amount and the second time adjustment amount.

[0148] In this embodiment, first, based on the rated current and rated temperature, a corresponding set of current intervals and temperature intervals are obtained. For example, a Level 1 interval is less than 70% of the rated value, a Level 2 interval is 70% to 90% of the rated value, a Level 3 interval is 90% to 110% of the rated value, a Level 4 interval is 110% to 130% of the rated value, and a Level 5 interval is greater than 130% of the rated value. Next, the first current information and the first temperature information are collated to obtain the corresponding interval number, which is recorded as the adjustment level. Finally, based on the current adjustment level and the temperature adjustment level, a preset adjustment correspondence table is searched to obtain the adjustment ratio of the first time information and the adjustment ratio of the second time information, thereby determining the first time adjustment amount and the second time adjustment amount.

[0149] Please refer to Figure 7 , Figure 7 The flowchart of the execution of the feedback control algorithm provided by the embodiment of the present invention is shown.

[0150] In the embodiment of the present invention, Figure 7 As shown, the first adjustment algorithm is also included as a first feedback control algorithm, specifically:

[0151] S702, obtaining rated current information and rated temperature information;

[0152] S704, calculating a difference between the first current information and the rated current information to obtain current deviation information;

[0153] S706, calculating the difference between the first temperature information and the rated temperature information to obtain temperature deviation information;

[0154] S708, obtaining a proportional control amount according to the current deviation information and the temperature deviation information and a proportional weight;

[0155] S710, obtaining an integral control amount according to the integral value of the current deviation information and the integral value of the temperature deviation information and the integral weight;

[0156] S712: Obtain a feedback control amount according to the proportional control amount and the integral control amount, for obtaining a first time adjustment amount and a second time adjustment amount.

[0157] It should be noted that, as an implementation method, this embodiment provides a first feedback control algorithm for a first time adjustment amount and a second time adjustment amount, specifically: obtaining rated current information and rated temperature information, respectively calculating the difference with the first current information and the first temperature information, to obtain current deviation information and temperature deviation information; according to the current deviation information and the temperature deviation information, obtaining a proportional control amount and an integral control amount, which are used to calculate the feedback control amount; according to the feedback control amount, obtaining the first time adjustment amount and the second time adjustment amount.

[0158] In this embodiment, a feedback control algorithm is used to obtain a first time adjustment variable and a second time adjustment variable. First, the difference between the real-time value and the rated value is calculated to obtain a deviation value. Then, a proportional control variable is calculated based on the deviation value and a proportional weight. An integral control variable is calculated based on the integral value of the deviation value and an integral weight. Finally, the proportional control variable and the integral weight are summed to obtain a feedback control variable, which includes the first and second time adjustment variables.

[0159] In an embodiment of the present invention, the following further comprises:

[0160] Obtaining current fluctuation frequency information based on the first current information based on discrete Fourier transform;

[0161] Determining whether the current fluctuation frequency information is greater than a preset first fluctuation frequency threshold;

[0162] If so, the integral weight is adjusted downward;

[0163] If not, determining whether the current fluctuation frequency information is less than a preset second fluctuation frequency threshold;

[0164] If so, the integral weight is adjusted upward.

[0165] It should be noted that this embodiment provides an adaptive adjustment mechanism for the integral weight of the first feedback control algorithm. First, based on the real-time current value, the dominant frequency of the current fluctuation, i.e., the current fluctuation frequency information, is obtained using a discrete Fourier transform (DFT) (which transforms the signal from the time domain to the frequency domain to analyze the signal's spectral structure and variation patterns). A high dominant frequency indicates frequent current fluctuations, potentially caused by feedback control overshoot; a low dominant frequency indicates slow current fluctuations, posing the risk of steady-state error accumulation. Therefore, if the current fluctuation is greater than a preset first fluctuation frequency threshold, the integral weight is adjusted downward according to a preset adjustment equation to avoid overshoot. Otherwise, the integral weight is adjusted upward according to a preset adjustment equation to reduce the risk of steady-state error accumulation. If the dominant frequency is within the range of the first and second fluctuation frequency thresholds, no adjustment is required.

[0166] In an embodiment of the present invention, a temperature compensation mechanism is also included, specifically:

[0167] When the first temperature information is greater than a preset first temperature threshold, temperature compensation is triggered;

[0168] Determining whether the first temperature information is lower than a preset second temperature threshold;

[0169] If yes, performing interpolation compensation on the first time adjustment amount and the second time adjustment amount using a preset piecewise linear interpolation method;

[0170] If not, the first time adjustment amount and the second time adjustment amount are adjusted according to a preset dynamic compensation relationship.

[0171] It should be noted that the control coil of the time delay relay is affected by temperature. As the temperature rises, the trigger delay time will be inaccurate. In this embodiment, when the real-time temperature of the regulation circuit exceeds the preset first temperature threshold, the temperature compensation mechanism is triggered, thereby compensating the first time adjustment amount and the second time adjustment amount to improve the accuracy of the trigger delay time. If the real-time temperature value is lower than the second temperature threshold, the preset piecewise linear interpolation method is used to compensate the adjustment amount; for example, for every 5°C increase in temperature, the delay time increases by 0.1ms. If the real-time temperature value is not lower than the second temperature threshold, the first time adjustment amount and the second time adjustment amount are adjusted according to the preset dynamic compensation relationship to reduce the adjustment step and improve the sensitivity of the temperature response.

[0172] In an embodiment of the present invention, the following further comprises:

[0173] If the first current information is greater than an overcurrent threshold or the first temperature information is greater than an overtemperature threshold, entering a protection mode;

[0174] The first time information is set to a minimum reference value;

[0175] The second time information is set to a maximum reference value;

[0176] If the protection mode duration exceeds the preset safety time threshold;

[0177] The output control power supply is disconnected and a fault code is sent.

[0178] It should be noted that in this embodiment, an operational protection mechanism is provided. When the real-time current exceeds the overcurrent threshold or the real-time temperature exceeds the overtemperature threshold, the system enters protection mode. By setting the first time information to the minimum reference value and the second time information to the maximum reference value, the cycle control signal is set to the lowest duty cycle to achieve the desired output current. In addition, if the duration of the protection mode exceeds the preset safety time threshold, the output power is disconnected and a fault code is generated and sent to the backend to improve maintenance efficiency.

[0179] It is worth mentioning that it also includes:

[0180] Get the power-on time of the delay relay;

[0181] When the power-on time reaches the first time information or the second time information, collecting and obtaining the second current information of the time delay relay;

[0182] determining a second current threshold according to the coil rated current;

[0183] determining whether the second current information is lower than the second current threshold;

[0184] If not, a contact adhesion warning is triggered, including an indicator light, a buzzer, or sending a warning instruction.

[0185] It should be noted that, in this embodiment, the working current of the control coil of the time-delay relay is detected to trigger a contact adhesion warning. Take the first time-delay relay as an example: when the power-on time of the control coil reaches the first time information, the working current of the control coil, that is, the second current information, is collected in real time. Then, based on the rated working current of the control coil, the second current threshold is obtained; in actual application, the second current threshold is 80% of the rated working current. Finally, if the working current of the control coil is less than the second current threshold, it is determined that the switch contacts of the time-delay relay are at risk of adhesion; at this time, a contact adhesion warning is issued through an indicator light, a buzzer or a warning instruction.

[0186] It is worth mentioning that it also includes:

[0187] According to the historical records, a latest preset number of first current information, first time information and second time information is obtained;

[0188] The first time relational expression and the second time relational expression are obtained by least square fitting;

[0189] When the regulating circuit starts, a first starting time is obtained according to the first time relationship expression, and a second starting time is obtained according to the second time relationship expression.

[0190] It should be noted that in this embodiment, data fitting is performed based on the most recent first current information, first time information, and second time information as historical records. For example, the least squares method is used to fit the most recent 20 sets of historical information to obtain the first time relationship equation and the second time relationship equation. When the adaptive regulation circuit is next powered on and started, the first start-up time and the second start-up time are calculated based on the first time relationship equation and the second time relationship equation, respectively, to improve the regulation efficiency of the cycle control signal.

[0191] In summary, the present invention provides an adaptive regulation circuit and method for a cycle based on dual delay relays. The adaptive regulation circuit takes two delay relays as the core, constructs interlocking control logic, and forms a closed-loop trigger mechanism; and outputs a cycle control signal through a low-cost circuit. The adaptive regulation method calculates the delay time adjustment amount of the delay relay in real time based on the dynamically monitored load current and ambient temperature, based on preset fuzzy logic control or feedback control, and then determines the delay time of the delay relay in combination with the target output frequency; according to the delay time of the delay relay, the adjustable rheostat set in the delay adjustment unit is automatically adjusted to achieve the frequency and duty cycle of the adaptive regulation cycle. In addition, the accuracy of intelligent control is improved through the temperature compensation mechanism; and the reliability of intelligent control is improved through the abnormality detection and protection mechanism.

[0192] In addition, the functional modules in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0193] If the functions are implemented as software modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or the portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage media include various media capable of storing program code, such as USB flash drives, mobile hard drives, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical disks.

[0194] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An adaptive regulation circuit based on the cycle period of a dual-delay relay, characterized in that: The circuit comprises: Processor, cycle output module, electrical parameter detection module and delay adjustment module; The cycle output module includes a first time delay relay and a second time delay relay; The normally closed switch of the first time delay relay is connected to the output control terminal, the normally open switch of the first time delay relay is connected to the control coil of the second time delay relay, and the normally closed switch of the second time delay relay is connected to the control coil of the first time delay relay; The electrical parameter detection module is used to detect electrical parameters of the regulating circuit, including at least the current value of the output control terminal and the temperature value of the regulating circuit; The delay adjustment module is used to adjust the trigger delay time of the first delay relay and the second delay relay; The processor collects the electrical parameters of the circuit through the electrical parameter detection module and adjusts the trigger delay time of the delay relay through the delay adjustment module; The delay adjustment module specifically includes: a first delay adjustment unit and a second delay adjustment unit; The first delay adjustment unit and the second delay adjustment unit are both provided with an adjustable rheostat for adjusting the trigger delay time of the delay relay; The first delay adjustment unit is used to adjust the trigger delay time of the first delay relay; The second delay adjustment unit is used to adjust the trigger delay time of the second delay relay.

2. The adaptive regulation circuit based on the cycle period of the dual delay relay according to claim 1, characterized in that: The first time delay relay further includes a single-pole double-throw switch of the same source, specifically: The common end of the homologous single-pole double-throw switch is connected to the positive electrode of the output control power supply; The normally closed end of the homologous single-pole double-throw switch is connected to the output control end, and then connected to the negative electrode of the output control power supply; The normally open end of the same-source single-pole double-throw switch is connected to the control coil of the second time delay relay, and then connected to the negative electrode of the output control power supply.

3. The adaptive regulation circuit based on the cycle period of the dual delay relay according to claim 1, characterized in that: The first time delay relay further includes a double-pole double-throw switch of a different source, specifically: The normally closed switch of the heterogeneous double-pole double-throw switch includes a first end and a second end; The first end is connected to the positive electrode of the output control power supply; The second end is connected to the output control end, and further connected to the negative electrode of the output control power supply; The normally open switch of the heterogeneous double-pole double-throw switch includes a third terminal and a fourth terminal; The third end is connected to the positive electrode of the coil control power supply; The fourth end is connected to the control coil of the second time delay relay and then connected to the negative electrode of the output control power supply.

4. A method for adaptively adjusting the cycle period of a dual-delay relay, applied to the adaptively adjusting circuit for the cycle period of a dual-delay relay according to any one of claims 1 to 3, characterized in that: The method comprises: Acquiring first current information of the output control terminal and first temperature information of the regulating circuit; It is expected that a preset first adjustment amount algorithm obtains a first time adjustment amount and a second time adjustment amount according to the first current information and the first temperature information; Acquire first time information of the first time delay relay and second time information of the second time delay relay; updating the first time information according to the first time adjustment amount, and updating the second time information according to the second time adjustment amount; Obtaining target duty cycle information according to the first time information and the second time information; Based on preset target frequency information and according to the target duty cycle information, adjusting the first time information and the second time information; adjusting a first delay adjustment unit of a delay adjustment module according to the first time information; The second delay adjustment unit of the delay adjustment module is adjusted according to the second time information.

5. The adaptive adjustment method of the cycle period based on the dual-delay relay according to claim 4 is characterized in that: The first adjustment algorithm is a fuzzy logic control algorithm, specifically: Obtain rated current information and rated temperature information; Based on the rated current information, a five-level current interval set is obtained; Based on the rated temperature information, a five-level temperature interval set is obtained; Based on the five-level current interval set, and according to the first current information, a current adjustment level is obtained; Based on the five-level temperature interval set, obtaining a temperature adjustment level according to the first temperature information; According to the current adjustment level and the temperature adjustment level, a preset adjustment correspondence table is searched to obtain a first time adjustment amount and a second time adjustment amount.

6. The adaptive adjustment method of the cycle period based on the dual-delay relay according to claim 4 is characterized in that: The first adjustment algorithm is a first feedback control algorithm, specifically: Obtain rated current information and rated temperature information; Calculating a difference between the first current information and the rated current information to obtain current deviation information; Calculating a difference between the first temperature information and the rated temperature information to obtain temperature deviation information; Obtaining a proportional control amount according to the current deviation information and the temperature deviation information and a proportional weight; Obtaining an integral control amount according to the integral value of the current deviation information and the integral value of the temperature deviation information and the integral weight; A feedback control amount is obtained according to the proportional control amount and the integral control amount, and is used to obtain a first time adjustment amount and a second time adjustment amount.

7. The adaptive adjustment method of the cycle period based on the dual-delay relay according to claim 6, characterized in that: Also includes: Obtaining current fluctuation frequency information based on the first current information based on discrete Fourier transform; Determining whether the current fluctuation frequency information is greater than a preset first fluctuation frequency threshold; If so, the integral weight is adjusted downward; If not, determining whether the current fluctuation frequency information is less than a preset second fluctuation frequency threshold; If so, the integral weight is adjusted upward.

8. The adaptive adjustment method for the cycle period based on the dual-delay relay according to claim 4 is characterized in that: It also includes temperature compensation mechanisms, specifically: When the first temperature information is greater than a preset first temperature threshold, temperature compensation is triggered; Determining whether the first temperature information is lower than a preset second temperature threshold; If yes, performing interpolation compensation on the first time adjustment amount and the second time adjustment amount using a preset piecewise linear interpolation method; If not, the first time adjustment amount and the second time adjustment amount are adjusted according to a preset dynamic compensation relationship.

9. The method for adaptively adjusting the cycle period of a dual-delay relay according to claim 4, characterized in that: Also includes: If the first current information is greater than an overcurrent threshold or the first temperature information is greater than an overtemperature threshold, entering a protection mode; The first time information is set to a minimum reference value; The second time information is set to a maximum reference value; If the protection mode duration exceeds the preset safety time threshold; The output control power supply is disconnected and a fault code is sent.

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