Pulsed light generator, control device and method thereof and air conditioner

Abstract

The invention discloses a pulsed light generator, a control device and method thereof and an air conditioner, and the control device of the pulsed light generator comprises a pulse control circuit which is configured to input a first control signal and output a pulse signal according to the first control signal; the booster circuit is connected with the pulse control circuit and is configured to input the working power supply voltage and a second control signal, perform boosting processing on the working power supply voltage according to the second control signal and provide the boosted voltage to the pulse lamp under the action of the pulse signal so as to trigger the pulse lamp to emit light; the current detection circuit is configured to detect the working current of the pulse lamp to obtain a current signal; the control unit is configured to adjust the first control signal and / or the second control signal according to the current signal when it is judged that the current signal does not meet the preset condition according to the pulse signal. The working current of the pulse lamp can be detected, the service life of the pulse lamp is prolonged, and power consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular, to a pulsed light generator, a control device, a method, a controller and an air conditioner thereof. Background Art

[0002] Applying pulsed intense light sterilization to an air conditioner can efficiently kill bacteria in the air duct of the air conditioner and in the room, playing a role in purifying the air. This technology is a light source technology that uses a special xenon lamp tube as the light source and excites intense full-spectrum light in the form of pulses, and can emit pulsed light with extremely high brightness.

[0003] In related technologies, there are generally problems with the parameter consistency of pulsed lamps. For example, with the same 5KV excitation voltage, a xenon lamp with normal parameters can be excited. For a lamp tube with serious positive parameter deviation, it cannot be excited under the rated voltage. For a lamp tube with serious negative parameter deviation, the excitation current will be too large under the rated voltage, resulting in shortened lifespan and increased power consumption of the entire system. After long-term operation, the internal parameters of a normal pulsed lamp will decay, or the pulsed lamp is not well sealed, resulting in a change in the humidity inside the pulsed lamp, leading to the above two problems of positive and negative parameter deviations of the pulsed lamp. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems in related technologies to some extent. For this purpose, an object of the present invention is to provide a pulsed light generator, a control device, a method, a controller and an air conditioner thereof. The control device of the pulsed light generator can solve the problem of non-excitation caused by positive deviation of the pulsed lamp, and the problem of shortened lifespan caused by excessive current due to negative deviation of the pulsed lamp, improve the service life of the pulsed lamp and reduce power consumption.

[0005] To achieve the above object, an embodiment of the first aspect of the present invention provides a control device for a pulsed light generator, including: a pulse control circuit configured to input a first control signal and output a pulse signal according to the first control signal; a boost circuit connected to the pulse control circuit, configured to input a working power supply voltage and a second control signal, perform a boost process on the working power supply voltage according to the second control signal, and provide the boosted voltage to a pulsed lamp under the action of the pulse signal to trigger the pulsed lamp to emit light; a current detection circuit configured to detect the working current of the pulsed lamp to obtain a current signal; a control unit connected to the pulse control circuit, the boost voltage and the current detection circuit respectively, and configured to adjust the first control signal and / or the second control signal according to the current signal when it is determined according to the pulse signal that the current signal does not meet a preset condition.

[0006] In addition, the control device of the light-flashing generator according to the above embodiments of the present invention may further have the following additional technical features:

[0007] In an embodiment of the present invention, a sampling resistor is connected in series in the power supply circuit of the pulsed lamp, and the current detection circuit includes: a current-voltage conversion sub-circuit connected to the sampling resistor and configured to convert the sampling current of the sampling resistor into a voltage signal; an average current detection sub-circuit connected to the current-voltage conversion sub-circuit and configured to obtain an average current according to the voltage signal; a peak current detection sub-circuit connected to the current-voltage conversion sub-circuit and configured to obtain a peak current according to the voltage signal; and a delay sub-circuit connected to the peak current detection sub-circuit and configured to perform a delay process on the peak current and then output it.

[0008] In an embodiment of the present invention, the current-voltage conversion sub-circuit includes a first resistor, a second resistor, a third resistor, and a first comparator; wherein, the first end of the first resistor is connected to the first end of the sampling resistor, the second end of the first resistor is connected to the positive input terminal of the first comparator, the first end of the second resistor is connected to the second end of the sampling resistor, the second end of the second resistor is respectively connected to the negative input terminal of the first comparator and the first end of the third resistor, the second end of the third resistor is connected to the output terminal of the first comparator, and the output terminal of the first comparator is respectively connected to the average current detection sub-circuit and the peak current detection sub-circuit.

[0009] In an embodiment of the present invention, the peak current detection sub-circuit includes a fourth resistor, a fifth resistor, and a second comparator, and the delay sub-circuit includes a first capacitor; wherein, the first end of the fourth resistor is connected to a first preset power supply, the second end of the fourth resistor is respectively connected to the first end of the fifth resistor and the negative input terminal of the second comparator, the second end of the fifth resistor is grounded, the positive input terminal of the second comparator is connected to the output terminal of the first comparator, the output terminal of the second comparator is connected to the first end of the first capacitor and is configured to output the peak current, and the second end of the first capacitor is grounded.

[0010] In an embodiment of the present invention, the average current detection sub-circuit includes a sixth resistor and a second capacitor; wherein, the first end of the sixth resistor is connected to the output terminal of the first comparator, the second end of the sixth resistor is connected to the first end of the second capacitor and is configured to output the average current, and the second end of the second capacitor is grounded.

[0011] In one embodiment of the present invention, the boost circuit includes: a first-stage boost sub-circuit configured to input the operating power supply voltage and the second control signal, and convert the operating power supply voltage into a first-stage voltage according to the second control signal; a second-stage boost sub-circuit connected to the first-stage boost sub-circuit and the pulse control circuit respectively, configured to boost the first-stage voltage to a second-stage voltage, and supply the second-stage voltage to the pulse lamp under the action of the pulse signal to trigger the pulse lamp to emit light.

[0012] In one embodiment of the present invention, the first-stage boost sub-circuit includes: a first transformer, a first switching tube, a first diode, a seventh resistor, and a third capacitor; wherein, the first end of the primary coil of the first transformer is configured to input the operating power supply voltage, the cathode of the first diode is connected to the first end of the primary coil of the first transformer, the anode of the first diode is respectively connected to the first end of the third capacitor and the first end of the seventh resistor, the first end of the first switching tube is respectively connected to the second end of the third capacitor, the second end of the seventh resistor, and the second end of the primary coil of the first transformer, the second end of the first switching tube is grounded, the control end of the first switching tube is configured to input the second control signal, the first end of the secondary coil of the first transformer is connected to the second-stage boost sub-circuit and is configured to connect to the first end of the pulse lamp, the second end of the secondary coil of the first transformer is grounded, wherein, the second end of the pulse lamp is connected to the second-stage boost sub-circuit, and the third end of the pulse lamp is grounded.

[0013] In one embodiment of the present invention, the second-stage boost sub-circuit includes: a second transformer; wherein, the first end of the primary coil of the second transformer is connected to the first end of the secondary coil of the first transformer through a fourth capacitor, the first end of the secondary coil of the second transformer is configured to connect to the second end of the pulse lamp, and the second end of the primary coil of the second transformer is connected to the second end of the secondary coil of the second transformer and is grounded.

[0014] In one embodiment of the present invention, the pulse control circuit includes: a thyristor, a second diode, an eighth resistor, a ninth resistor, a tenth resistor; wherein, the anode of the thyristor is connected to the first end of the secondary coil of the first transformer and is connected to the third end of the pulse lamp through a fifth capacitor, the control end of the thyristor is respectively connected to the anode of the second diode and the first end of the eighth resistor and is configured to input the first control signal, the first end of the tenth resistor is connected to the first end of the ninth resistor, the second end of the ninth resistor is connected to a second preset power supply through a plurality of series resistors, and the cathode of the thyristor, the second end of the eighth resistor, the anode of the second diode, and the second end of the tenth resistor are all grounded.

[0015] The control device of the pulse lamp generator according to the embodiment of the present invention detects the current signal of the pulse lamp through a current detection circuit, judges whether the current signal meets a preset condition according to the pulse signal, and controls according to the specific current situation when it does not meet the preset condition. The current signal includes a peak current and an average current. When the peak current is greater than a first current threshold, step-down control is performed on the first-level boost sub-circuit. When the average current is greater than a second current threshold, the pulse control circuit is controlled to reduce the pulse duration of the pulse signal. When the pulse of the current signal does not follow the pulse of the pulse signal, or when the current signal is not detected, step-up control is performed on the first-level boost sub-circuit. And after performing step-up control on the first-level boost sub-circuit, the peak current of the current signal is also detected. This method can solve the problem of inability to be excited caused by the positive deviation of the pulse lamp, and the problem of shortened lifespan due to excessive current caused by the negative deviation of the pulse lamp, improve the service life of the pulse lamp and reduce power consumption.

[0016] To achieve the above object, a second aspect embodiment of the present invention proposes a control method for a pulse light generator, which is used for the control device of the pulse light generator as described above. The method includes: obtaining the pulse signal output by the pulse control circuit, and obtaining the working current of the pulse lamp to obtain a current signal; judging whether the current signal meets a preset condition according to the pulse signal; if the current signal does not meet the preset condition, controlling at least one of the boost circuit and the pulse control circuit according to the current signal to make the pulse light generator work normally.

[0017] In addition, the control method for the impulse light generator proposed according to the above embodiments of the present invention may also have the following additional technical features:

[0018] In an embodiment of the present invention, the preset condition includes: the pulse of the current signal follows the pulse of the pulse signal, and the peak current is less than or equal to the first current threshold, and the average current is less than or equal to the second current threshold, where the peak current and the average current are obtained according to the current signal.

[0019] In an embodiment of the present invention, the boost circuit includes a first-stage boost sub-circuit and a second-stage boost sub-circuit. The first-stage boost sub-circuit is configured to convert the operating power supply voltage into a first-stage voltage. The second-stage boost sub-circuit is respectively connected to the first-stage boost sub-circuit and the pulse control circuit, and is configured to boost the first-stage voltage to a second-stage voltage and supply the second-stage voltage to the pulse lamp under the action of the pulse signal. Wherein, the controlling at least one of the boost circuit and the pulse control circuit according to the current signal includes: when the peak current is greater than the first current threshold, performing step-down control on the first-stage boost sub-circuit; when the average current is greater than the second current threshold, controlling the pulse control circuit to reduce the pulse duration of the pulse signal; when the pulse of the current signal does not follow the pulse of the pulse signal, or the current signal is not detected, performing step-up control on the first-stage boost sub-circuit.

[0020] In an embodiment of the present invention, the performing step-up control on the first-stage boost sub-circuit includes: controlling the output voltage of the first-stage boost sub-circuit to increase step by step until the current signal corresponding to the increased output voltage meets the preset condition, or the number of times of increasing the output voltage reaches the preset number of times, or the increased output voltage reaches the preset voltage limit value.

[0021] In an embodiment of the present invention, after controlling the first-stage boost sub-circuit, the method further includes: if the current signal meets the preset condition, determining that the pulse lamp is operating normally, stopping the control of the boost circuit, saving the current control signal of the first-stage boost sub-circuit, and when the pulse light generator runs next time, controlling the first-stage boost sub-circuit according to the saved control signal.

[0022] The control method of the pulse lamp generator according to the embodiment of the present invention detects the current signal of the pulse lamp through a current detection circuit, judges whether the current signal meets the preset condition according to the pulse signal, and when it does not meet the preset condition, performs control according to the specific current situation. The current signal includes peak current and average current. When the peak current is greater than the first current threshold, step-down control is performed on the first-stage boost sub-circuit. When the average current is greater than the second current threshold, the pulse control circuit is controlled to reduce the pulse duration of the pulse signal. When the pulse of the current signal does not follow the pulse of the pulse signal, or the current signal is not detected, step-up control is performed on the first-stage boost sub-circuit. And after performing step-up control on the first-stage boost sub-circuit, the peak current of the current signal is also detected. This method can solve the problem of inability to excite caused by the positive deviation of the pulse lamp, and the problem of shortened life due to excessive current caused by the negative deviation of the pulse lamp, improve the service life of the pulse lamp and reduce power consumption.

[0023] To achieve the above object, an embodiment of the third aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the control method of the pulse light generation circuit generator as described above is implemented.

[0024] To achieve the above object, an embodiment of the fourth aspect of the present invention provides a pulse light generator, including: a pulse lamp and a control device for the pulse lamp as described above.

[0025] To achieve the above object, an embodiment of the fifth aspect of the present invention provides an air conditioner, including the pulse light generator as described above.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0027] Figure 1 is a schematic diagram of a control device of a pulse light generator according to an embodiment of the present invention;

[0028] Figure 2 is a schematic diagram of a control device of a pulse light generator according to another embodiment of the present invention;

[0029] Figure 3 is a schematic diagram of the structure of a pulse lamp according to an embodiment of the present invention;

[0030] Figure 4 is a schematic diagram of a current detection circuit according to an embodiment of the present invention;

[0031] Figure 5 is a circuit diagram of a current detection circuit according to an embodiment of the present invention;

[0032] Figure 6 is a schematic diagram of a current waveform and pulse control logic under normal working conditions according to an embodiment of the present invention;

[0033] Figure 7 is a schematic diagram of a boost circuit according to an embodiment of the present invention;

[0034] Figure 8 is a schematic diagram of a first-stage boost sub-circuit according to an embodiment of the present invention;

[0035] Figure 9 is a schematic diagram of a second-stage boost sub-circuit according to an embodiment of the present invention;

[0036] Figure 10 is a schematic diagram of a pulse control circuit according to an embodiment of the present invention;

[0037] Figure 11It is a flowchart of a control method for a pulsed light generator according to an embodiment of the present invention;

[0038] Figure 12 It is a flowchart of boosting control for a boosting circuit according to an embodiment of the present invention;

[0039] Figure 13 It is a schematic structural diagram of a pulsed light generator according to an embodiment of the present invention;

[0040] Figure 14 It is a schematic structural diagram of an air conditioner according to an embodiment of the present invention. Detailed implementation manners

[0041] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0042] The pulsed light generator, its control device, method, controller and air conditioner according to the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0043] Figure 1 It is a schematic diagram of a control device for a pulsed light generator according to an embodiment of the present invention.

[0044] In an embodiment of the present invention, as Figure 1 shown, the control device of the pulsed light generator includes: a pulse control circuit 20, configured to input a first control signal and output a pulse signal according to the first control signal; a boosting circuit 10, connected to the pulse control circuit, configured to input a working power supply voltage and a second control signal, and boost the working power supply voltage according to the second control signal, and supply the boosted voltage to the pulsed lamp under the action of the pulse signal to trigger the pulsed lamp to emit light; a current detection circuit 30, configured to detect the working current of the pulsed lamp to obtain a current signal; a control unit 40, respectively connected to the pulse control circuit 20, the boosting voltage 10 and the current detection circuit 30, configured to adjust the first control signal and / or the second control signal according to the current signal when it is determined according to the pulse signal that the current signal does not meet the preset conditions.

[0045] Specifically, the boost circuit 10 is configured to input the working power supply voltage. The boost circuit 10 is used to boost the working power supply voltage. The boost circuit can both boost and step down the voltage. The boost circuit 10 inputs the boosted working power supply voltage to the pulse control circuit 20. The pulse control circuit 20 outputs a pulse signal to the pulse lamp according to the first control signal. The pulse lamp can be a xenon lamp and operates under the trigger of the pulse signal. When the pulse lamp operates, it generates a working current. The current detection circuit 30 is used to detect the working current of the pulse lamp.

[0046] Exemplarily, the boost circuit 10, the pulse control circuit 20, and the current detection circuit 30 are also connected to the control unit 40. The micro control unit outputs the first control signal to the pulse control circuit 20 and outputs the second control signal to the boost circuit 10. When it is determined that the current signal does not meet the preset conditions according to the pulse signal, the first control signal to the pulse control circuit 20 and / or the second control signal to the boost circuit 10 are adjusted according to the current signal. For example, when the detected current signal is small and the pulse lamp is not triggered, the second control signal to the boost circuit 10 can be adjusted to make the boost circuit 10 continue to boost. When the detected current signal is large, the first control signal to the pulse control circuit 20 can be adjusted to reduce the pulse duration of the pulse signal.

[0047] Figure 2 It is a schematic diagram of the control device of the pulse light generator according to another embodiment of the present invention.

[0048] As Figure 2 shown, the pulse light generator includes a first-stage boost sub-circuit, a voltage sampling circuit, a second-stage boost transformer, a pulse control circuit, and a pulse lamp. The working power supply voltage is input to the first-stage boost sub-circuit. The relationship between the output voltage and the input voltage of the first-stage boost sub-circuit is: Uout = Uin * Ns * D / (Np(1 - D)), where Uout is the output voltage of the first-stage boost sub-circuit, Uin is the input voltage of the first-stage boost sub-circuit, Ns is the number of turns of the secondary coil in the first-stage boost sub-circuit, Np is the number of turns of the primary coil in the first-stage boost sub-circuit, and D is the duty cycle of the first-stage boost sub-circuit. The first-stage boost sub-circuit can adjust its output voltage by controlling the duty cycle D. Denote the voltage output by the first-stage boost sub-circuit as H-VDD. A voltage sampling circuit is arranged after the first-stage boost sub-circuit, and the sampled voltage T-VDD1 collected by the voltage sampling circuit. The voltage sampling circuit transmits the sampled voltage to the control unit. The output voltage of the first-stage boost sub-circuit is boosted again by the second-stage boost sub-circuit. Denote the voltage output by the second-stage boost sub-circuit as S-VDD, and S-VDD = N * H-VDD, where N is the turns ratio of the second-stage boost sub-circuit. Then, a pulse signal is output through the pulse control circuit to trigger the pulse lamp to emit light. As Figure 3Structural diagram of the pulse lamp shown. The pulse lamp includes a plastic bracket 1 and a xenon lamp tube 2. The first-stage boost sub-circuit, voltage application circuit, and pulse control circuit are all connected to the control unit. The control unit is used to control the first-stage boost sub-circuit and the pulse control circuit according to whether the current signal of the pulse lamp is normal, and judge whether the output voltage of the boost circuit reaches the target value according to the sampled voltage T-VDD1.

[0049] In an embodiment of the present invention, as Figure 4 shown, the current detection circuit 30 includes: a current-voltage conversion sub-circuit 301, connected to the sampling resistor, configured to convert the sampling current of the sampling resistor into a voltage signal; an average current detection sub-circuit 302, connected to the current-voltage conversion sub-circuit 301, configured to obtain the average current according to the voltage signal; a peak current detection sub-circuit 303, connected to the current-voltage conversion sub-circuit 301, configured to obtain the peak current according to the voltage signal; a delay sub-circuit 304, connected to the peak current detection sub-circuit 303, configured to perform a delay process on the peak current and then output.

[0050] As an example, a current detection circuit is connected after the pulse lamp. The current detection circuit is used to obtain the real-time current of the pulse lamp. A sampling resistor is connected in series in the power supply circuit of the pulse lamp. The current-voltage conversion sub-circuit 301 is connected to the sampling resistor and converts the sampling current of the sampling resistor into a voltage signal. The current detection circuit is divided into two parts, one is average current detection and the other is peak current detection. The average current detection sub-circuit 302 is used to detect the average current in the current signal, and the peak current detection sub-circuit 303 is used to detect the peak current in the current signal and judge whether it exceeds a preset threshold. The average current can be calculated according to the current signal, but the peak current is a narrow pulse signal and it is difficult for the control unit to detect. In the present invention, a delay sub-circuit 304 is provided in the current detection circuit to detect the peak current. After obtaining the pulse signal of the pulse control circuit 20 and the current signal of the pulse lamp, judge whether the current signal of the current detection circuit meets the preset conditions according to the pulse signal obtained by the pulse control circuit 20.

[0051] As an example, as Figure 5As shown in the figure, the current-voltage conversion sub-circuit 301 includes a first resistor R1, a second resistor R2, a third resistor R3, and a first comparator IC1. Among them, the first end of the first resistor R1 is connected to the first end of the sampling resistor, the second end of the first resistor R1 is connected to the positive input terminal of the first comparator IC1, the first end of the second resistor R2 is connected to the second end of the sampling resistor, the second end of the second resistor R2 is respectively connected to the negative input terminal of the first comparator and the first end of the third resistor R3, the second end of the third resistor R3 is connected to the output terminal of the first comparator IC1, and the output terminal of the first comparator IC1 is respectively connected to the average current detection sub-circuit 302 and the peak current detection sub-circuit 303.

[0052] As an example, as Figure 5 shown, the peak current detection sub-circuit 303 includes a fourth resistor R4, a fifth resistor R5, and a second comparator IC2, and the delay sub-circuit includes a first capacitor C1. Among them, the first end of the fourth resistor R4 is connected to the first preset power supply VDD, the second end of the fourth resistor R4 is respectively connected to the first end of the fifth resistor R5 and the negative input terminal of the second comparator IC2, the second end of the fifth resistor R5 is grounded, the positive input terminal of the second comparator IC2 is connected to the output terminal of the first comparator IC1, the output terminal of the second comparator IC2 is connected to the first end of the first capacitor C1 and is configured to output the peak current, and the second end of the first capacitor C1 is grounded.

[0053] As an example, as Figure 5 shown, the average current detection sub-circuit 302 includes a sixth resistor R6 and a second capacitor C2. Among them, the first end of the sixth resistor R6 is connected to the output terminal of the first comparator IC1, the second end of the sixth resistor R6 is connected to the first end of the second capacitor C2 and is configured to output the average current, and the second end of the second capacitor C2 is grounded.

[0054] Exemplarily, the current detection circuit 30 acquires the current signal of the pulse lamp, and the waveform of the acquired current signal under normal operation is as Figure 6 shown. The current signal includes the peak current I_P of the peak current detection sub-circuit 303 and the average current I_V obtained by the average current detection sub-circuit 302, and it is judged whether the current signal meets the preset conditions according to the pulse signal.

[0055] Exemplarily, the preset conditions include: the pulse of the current signal follows the pulse of the pulse signal, and the peak current is less than or equal to the first current threshold, and the average current is less than or equal to the second current threshold, where the peak current and the average current are obtained according to the current signal.

[0056] The current signal under normal operation should be as Figure 6The pulse signal of the following pulse control circuit shown, for example, when the control unit controls the pulse control circuit to output a pulse signal with a frequency of F and a conduction time of T0, the frequency of the corresponding current signal of the pulse lamp should also be F, and the high level of the current signal follows the high level of the pulse signal.

[0057] Specifically, if the peak current I-P is too large, the switching tube will be damaged after long-term operation. To improve the reliability of the switching tube, the peak current needs to be limited within a reasonable operating range. It needs to be compared with the first current threshold, and it is required that the peak current is less than or equal to the first current threshold. The first current threshold is the preset maximum peak current value, which can be set according to the parameters of the switching tube. If the average current I-V is too large, the long-term excessive average current will shorten the life of the xenon lamp and increase the power consumption of the entire system. Therefore, the magnitude of the average current also needs to be controlled, and it is required that the average current is less than or equal to the second current threshold.

[0058] If the current signal does not meet the pulse of the current signal following the pulse of the pulse signal, and the peak current is less than or equal to the first current threshold, or the average current is less than or equal to the second current threshold, it is considered that the current model does not meet the preset conditions, and the first control signal and / or the second control signal need to be adjusted according to the specific situation of the current signal, that is, at least one of the boost circuit 10 and the pulse control circuit 20 is controlled to make the pulse light generator work normally.

[0059] The reason why the pulse generator cannot work properly may be that the peak current does not meet the preset conditions, or the average current does not meet the preset conditions, or both, or the current signal does not follow the pulse signal, or the current signal cannot be detected. Different fault conditions of the current signal correspond to different control methods. If the peak current in the current signal does not meet the preset conditions, the second control signal is adjusted to control the boost circuit 10. If the average current in the current signal does not meet the preset conditions, the first control signal is adjusted to control the pulse control circuit 20. If the pulse of the current signal does not follow the pulse of the pulse signal, or when the current signal is not detected, the second control signal is adjusted to control the boost circuit 10.

[0060] As an example, as Figure 7 shown, the boost circuit ‎10 includes a first-stage boost sub-circuit ‎101 configured to input a working power supply voltage and a second control signal, and convert the working power supply voltage into a first-stage voltage according to the second control signal; a second-stage boost sub-circuit ‎102 connected to the first-stage boost sub-circuit ‎101 and the pulse control circuit ‎20 respectively, configured to boost the first-stage voltage to a second-stage voltage, and supply the second-stage voltage to the pulse lamp under the action of the pulse signal to trigger the pulse lamp to emit light.

[0061] Exemplarily, when the peak current is greater than the first current threshold, step-down control is performed on the first-stage boost sub-circuit 101; when the average current is greater than the second current threshold, the pulse control circuit 20 is controlled to reduce the pulse duration of the pulse signal; when the pulse of the current signal does not follow the pulse of the pulse signal, or when the current signal is not detected, step-up control is performed on the first-stage boost sub-circuit 101.

[0062] As an example, as Figure 8 shown, the first-stage boost sub-circuit 101 includes: a first transformer TR1, a first switching transistor Q1, a first diode D1, a seventh resistor R7, and a third capacitor C3; wherein, the first end of the primary coil of the first transformer TR1 is configured to input the operating power supply voltage, the cathode of the first diode D1 is connected to the first end of the primary coil of the first transformer TR1, the anode of the first diode D1 is respectively connected to the first end of the third capacitor C3 and the first end of the seventh resistor R7, the first end of the first switching transistor Q1 is respectively connected to the second end of the third capacitor C3, the second end of the seventh resistor R7, and the second end of the primary coil of the first transformer TR1, the second end of the first switching transistor Q1 is grounded, the control end of the first switching transistor Q1 is configured to input a second control signal, the first end of the secondary coil of the first transformer TR1 is connected to the second-stage boost sub-circuit 102 and is configured to connect to the first end of the pulsed lamp, the second end of the secondary coil of the first transformer TR1 is grounded, wherein, the second end of the pulsed lamp is connected to the second-stage boost sub-circuit 102, and the third end of the pulsed lamp is grounded.

[0063] As an example, as Figure 9 shown, the second-stage boost sub-circuit includes: a second transformer TR1; wherein, the first end of the primary coil of the second transformer TR2 is connected to the first end of the secondary coil of the first transformer TR1 through a fourth capacitor C4, the first end of the secondary coil of the second transformer TR2 is configured to connect to the second end of the pulsed lamp, and the second end of the primary coil of the second transformer TR2 is connected to the second end of the secondary coil of the second transformer TR2 and is grounded.

[0064] Exemplarily, the output first-stage voltage of the first-stage boost sub-circuit 101 is boosted again by the second-stage boost sub-circuit 102. Denote the second-stage voltage output by the second-stage boost sub-circuit 102 as S-VDD, S-VDD = N * H-VDD, where N is the turns ratio of the second-stage boost sub-circuit 102. Then, a pulse signal is output through the pulse control circuit 20 to trigger the pulsed lamp to emit light.

[0065] As an example, when the peak current reaches the first current threshold, the second control signal is adjusted to perform buck control on the first-level boost sub-circuit 101. The control unit reduces the excitation voltage S_VDD by controlling the duty cycle D of the first-level boost sub-circuit 101, thereby reducing the peak current. It should be noted that after reducing the excitation voltage S_VDD, it is also necessary to detect whether the pulsed lamp can be normally excited.

[0066] As an example, as Figure 10 shown, the pulse control circuit 20 includes: a thyristor IC3, a second diode D2, an eighth resistor R8, a ninth resistor R9, and a tenth resistor R10; wherein, the anode of the thyristor IC3 is connected to the first end of the secondary coil of the first transformer TR1 and is connected to the third end of the pulsed lamp through a fifth capacitor C5. The control end of the thyristor IC3 is respectively connected to the anode of the second diode D2 and the first end of the eighth resistor R8 and is configured to input a first control signal. The first end of the tenth resistor R10 is connected to the first end of the ninth resistor R9. The second end of the ninth resistor R9 is connected to a second preset power supply through a plurality of series resistors. The cathode of the thyristor IC3, the second end of the eighth resistor R8, the anode of the second diode D2, and the second end of the tenth resistor R10 are all grounded.

[0067] As an example, the second end of the ninth resistor R9 is connected to the second preset power supply through a plurality of series resistors, and the positions of the plurality of resistors are replaced by the resistor R11 as Figure 10 shown. In addition to R11, a plurality of series resistors can also be set and connected to the second preset power supply.

[0068] When it is detected that the average current is greater than the second current threshold, the first control signal is adjusted to control the pulse control circuit 20 to reduce the pulse duration of the pulse signal. The control unit modulates the pulse output logic of the pulse control circuit 20 to reduce the conduction time T0 of the pulse signal, so as to achieve the purpose of reducing the average current.

[0069] When the pulse of the current signal does not follow the pulse of the pulse signal, or when the current signal is not detected, boost control is performed on the first-level boost sub-circuit 101. When the pulse of the current signal does not follow the pulse of the pulse signal, or when the current signal is not detected, the possible reasons for the failure are: 1. The parameters of the pulsed lamp are inconsistent or there is attenuation. 2. The pulsed lamp is damaged. To determine the specific reason for the current signal failure, when the controller first detects the current signal failure, it is assumed that the reason for the pulsed lamp failure is the attenuation of the pulsed lamp parameters, and boost control is performed on the boost circuit to enable the pulsed light generator to work normally. If the pulsed lamp still cannot return to normal after boost control is performed on the boost circuit, it is determined that the reason for the current signal is that the pulsed lamp is damaged.

[0070] The control device of the pulsed light generator according to an embodiment of the present invention includes: a pulse control circuit configured to input a first control signal and output a pulse signal according to the first control signal; a boost circuit connected to the pulse control circuit, configured to input a working power supply voltage and a second control signal, boost the working power supply voltage according to the second control signal, and supply the boosted voltage to the pulsed lamp under the action of the pulse signal to trigger the pulsed lamp to emit light; a current detection circuit configured to detect the working current of the pulsed lamp to obtain a current signal; wherein, when it is determined according to the pulse signal that the current signal does not meet the preset conditions, the first control signal and / or the second control signal is adjusted according to the current signal. The control device of the pulsed light generator detects the working current of the pulsed lamp, improves the service life of the pulsed lamp and reduces power consumption.

[0071] The present invention also provides a control method for a pulsed light generator.

[0072] In an embodiment of the present invention, the control method of the pulsed light generator is used for the control device of the pulsed light generator as described above. The control method of the pulsed light generator includes:

[0073] S1, obtain the pulse signal output by the pulse control circuit, and obtain the working current of the pulsed lamp to obtain a current signal.

[0074] S2, determine whether the current signal meets the preset conditions according to the pulse signal.

[0075] S3, if the current signal does not meet the preset conditions, control at least one of the boost circuit and the pulse control circuit according to the current signal to enable the pulsed light generator to work normally.

[0076] Exemplarily, the pulsed light generator includes a boost circuit, a pulse control circuit and a pulsed lamp. Among them, the boost circuit can realize both boosting and bucking, and the pulsed lamp can be a xenon lamp. The power supply is input to the boost circuit. The relationship between the output voltage and the input voltage of the boost circuit is: Uout = Uin * Ns * D / (Np(1 - D)), where Uout is the output voltage of the boost circuit, Uin is the input voltage of the boost circuit, Ns is the number of turns of the secondary coil in the boost circuit, Np is the number of turns of the primary coil in the boost circuit, and D is the duty cycle of the boost circuit. The boost circuit can adjust its output voltage by controlling the duty cycle D.

[0077] Exemplarily, a current detection circuit is connected after the pulsed lamp. The current detection circuit is used to obtain the real-time current of the pulsed lamp. The current detection circuit is divided into two parts. One is the average current detection, and the other is the peak current detection. The peak current and the average current in the current signal are respectively detected to determine whether they exceed the preset threshold. The average current can be calculated from the current signal, but the peak current is a narrow pulse signal, and it is difficult for the control unit to detect it. In the present invention, a delay circuit is provided in the current detection circuit to detect the peak current. After obtaining the pulse signal of the pulse control circuit and the current signal of the pulsed lamp, it is judged whether the current signal of the current detection circuit meets the preset conditions according to the pulse signal obtained by the pulse control circuit.

[0078] In an embodiment of the present invention, the preset conditions include: the pulse of the current signal follows the pulse of the pulse signal, and the peak current is less than or equal to the first current threshold, and the average current is less than or equal to the second current threshold, wherein the peak current and the average current are obtained from the current signal.

[0079] Specifically, the current signal under normal working conditions should be as Figure 6 shown to follow the pulse signal of the pulse control circuit. For example, when the control unit controls the pulse control circuit to output a pulse signal with a frequency of F and a conduction time of T0, the frequency of the corresponding current signal of the pulsed lamp should also be F, and the high level of the current signal follows the high level of the pulse signal.

[0080] More specifically, if the peak current I-P is too large, the switching tube will be damaged after long-term operation. To improve the reliability of the switching tube, the peak current needs to be limited within a reasonable working range. It needs to be compared with the first current threshold, and it is required that the peak current is less than or equal to the first current threshold. The first current threshold is the preset maximum value of the peak current, and this value can be set according to the parameters of the switching tube. If the average current I-V is too large, the long-term excessive average current will shorten the life of the xenon lamp and increase the power consumption of the entire system. Therefore, the magnitude of the average current also needs to be controlled, and it is required that the average current is less than or equal to the second current threshold.

[0081] If the current signal does not satisfy any of the conditions that the pulse of the current signal follows the pulse of the pulse signal, and the peak current is less than or equal to the first current threshold, and the average current is less than or equal to the second current threshold, it is considered that the current signal does not meet the preset conditions, and at least one of the boost circuit and the pulse control circuit needs to be controlled according to the specific situation of the current signal to make the pulsed light generator work normally.

[0082] Exemplarily, the boost circuit includes a first-stage boost sub-circuit and a second-stage boost sub-circuit. The first-stage boost sub-circuit is configured to convert the operating power supply voltage into a first-stage voltage. The second-stage boost sub-circuit is connected to the first-stage boost sub-circuit and the pulse control circuit respectively, and is configured to boost the first-stage voltage to a second-stage voltage and supply the second-stage voltage to the pulse lamp under the action of a pulse signal. Among them, controlling at least one of the boost circuit and the pulse control circuit according to the current signal includes: when the peak current is greater than the first current threshold, performing step-down control on the first-stage boost sub-circuit; when the average current is greater than the second current threshold, controlling the pulse control circuit to reduce the pulse duration of the pulse signal; when the pulse of the current signal does not follow the pulse of the pulse signal, or when the current signal is not detected, performing step-up control on the first-stage boost sub-circuit.

[0083] Specifically, when it is detected that the peak current is greater than the first current threshold, step-down control is performed on the first-stage boost sub-circuit. The control unit reduces the excitation voltage S_VDD by controlling the duty cycle D of the first-stage boost sub-circuit, thereby reducing the peak current. It should be noted that after reducing the excitation voltage S_VDD, it is also necessary to detect whether the pulse lamp can be normally excited.

[0084] When it is detected that the average current is greater than the second current threshold, the pulse control circuit is controlled to reduce the pulse duration of the pulse signal. The control unit modulates the pulse output logic of the pulse control circuit to reduce the conduction time T0 of the pulse signal to achieve the purpose of reducing the average current.

[0085] When the pulse of the current signal does not follow the pulse of the pulse signal, or when the current signal is not detected, step-up control is performed on the first-stage boost sub-circuit. When the pulse of the current signal does not follow the pulse of the pulse signal, or when the current signal is not detected, the possible causes of the failure are: 1. The parameters of the pulse lamp are inconsistent or there is attenuation. 2. The pulse lamp is damaged. To determine the specific cause of the current signal failure, when the controller first detects a current signal failure, it is assumed that the cause of the pulse lamp failure is the attenuation of the pulse lamp parameters, and step-up control is performed on the first-stage boost sub-circuit to make the pulse light generator work normally. If the pulse lamp still cannot return to normal after performing step-up control on the first-stage boost sub-circuit, it is determined that the cause of the current signal is that the pulse lamp is damaged.

[0086] In an embodiment of the present invention, performing step-up control on the first-stage boost sub-circuit includes: controlling the output voltage of the first-stage boost sub-circuit to increase step by step until the current signal corresponding to the increased output voltage meets a preset condition, or the number of times the output voltage increases reaches a preset number of times, or the increased output voltage reaches a preset voltage limit value.

[0087] Specifically, for the boost control of the first - stage boost sub - circuit, the output voltage H_VDD of the first - stage boost sub - circuit can be lifted by controlling the duty cycle D of the first - stage boost sub - circuit, and the output voltage of the first - stage boost sub - circuit can be increased step - by - step. For example, by controlling the duty cycle D, the voltage of the output voltage H_VDD of the first - stage boost sub - circuit is lifted by M volts, where M can be between 5 and 20V. After passing through the second - stage boost sub - circuit, the elevated voltage acting on the pulsed lamp is M * N, and N is the turns ratio of the second - stage boost sub - circuit. If the current signal corresponding to the elevated output voltage after the boost control meets the preset conditions, the boost control of the first - stage boost sub - circuit is stopped. If the current signal corresponding to the elevated output voltage after one - time boost control still does not meet the preset conditions, the boost control of the first - stage boost sub - circuit continues.

[0088] In some embodiments, the boost control of the first - stage boost sub - circuit includes that the number of times of voltage increase reaches a preset number of times. When the pulsed lamp still cannot work properly after the first boost control, the control unit will increase the voltage again. For example, it is increased by M volts again until the preset number of times is reached.

[0089] The preset number of times can be 3 times. As Figure 12 shown, the control unit controls the duty cycle D so that the boost circuit generates the H - VDD voltage. The H - VDD is boosted twice to generate the S - VDD voltage for the pulse control circuit. The control unit controls the output logic to trigger the pulsed lamp to emit pulsed strong light. The current detection circuit detects the current signal of the pulsed lamp to judge whether a fault occurs. If the current signal does not follow the pulse signal or no current signal is detected, the control unit modulates the duty cycle D of the boost circuit to increase the H - VDD voltage by M volts, and the voltage acting on the pulsed lamp is increased by M * N volts. When the pulsed lamp still cannot work properly after the first boost control, the MCU will increase the voltage again, by M volts again. If the current signal still cannot meet the preset conditions, the duty cycle of the first - stage boost sub - circuit is regulated again. Eventually, there will be three voltage increases. If the elevated voltage 3 * M * N after three voltage increases cannot make the pulsed lamp return to normal operation, it is considered that the pulsed lamp has a damage fault.

[0090] In some embodiments, the boost control of the first - stage boost sub - circuit further includes that the elevated output voltage reaches a preset voltage limit value. The preset voltage limit value can be the voltage value corresponding to the maximum duty cycle. For example, when modulating the duty cycle D, it has been modulated to the maximum duty cycle. At this time, the voltage value corresponding to the maximum duty cycle is already the maximum voltage that the first - stage boost sub - circuit can provide. At this time, the boost control of the first - stage boost sub - circuit is stopped, and it is judged whether the current signal of the corresponding pulsed light meets the preset conditions.

[0091] In one embodiment of the present invention, after controlling the first - stage boost sub - circuit: if the current signal meets the preset conditions, it is determined that the pulsed light generator is operating normally, and the boost control of the first - stage boost sub - circuit is stopped. The current control signal for the first - stage boost sub - circuit is saved, and when the pulsed light generator runs next time, the first - stage boost sub - circuit is controlled according to the saved control signal.

[0092] Specifically, during the process of performing boost control on the first - stage boost sub - circuit, if the current signal of the pulsed lamp meets the preset conditions, it is determined that the pulsed light generator is operating normally, and the boost control of the first - stage boost sub - circuit is stopped. The controller saves the duty cycle corresponding to the current voltage value, and when the pulsed light generator runs next time, it directly controls the boost circuit according to the saved control signal, that is, controls the first - stage boost sub - circuit according to the saved duty cycle.

[0093] After performing boost control on the first - stage boost sub - circuit, if the current signal of the pulsed lamp can return to the normal operating state, it indicates that the reason for the abnormal current signal of the pulsed lamp is that the parameters of the pulsed lamp are inconsistent or there is attenuation. If the pulsed lamp is damaged, even if boost control is performed on the first - stage boost sub - circuit, the current signal of the pulsed lamp cannot return to normal.

[0094] Exemplarily, the control method of the pulsed light generator further includes: after stopping the boost control of the first - stage boost sub - circuit, if the current signal still does not meet the preset conditions, a fault prompt message is sent to prompt the damage of the pulsed lamp.

[0095] Specifically, after performing boost control on the boost circuit multiple times, if the current signal of the pulsed lamp still does not meet the preset conditions, it indicates that the reason for the abnormal current signal of the pulsed lamp is the damage of the pulsed lamp. The pulsed light generator sends a fault prompt message to prompt the damage of the pulsed lamp. The fault prompt message includes the pulsed lamp damage information, and the fault prompt can be a voice prompt or a signal prompt, etc.

[0096] The control method of the pulse lamp generator according to the embodiment of the present invention detects the current signal of the pulse lamp through a current detection circuit, judges whether the current signal meets the preset conditions according to the pulse signal, and when it does not meet the preset conditions, controls according to the specific current situation. The current signal includes peak current and average current, and a delay circuit is used to obtain the value of the peak current. When the peak current is greater than the first current threshold, step-down control is performed on the first-stage boost sub-circuit. When the average current is greater than the second current threshold, the pulse control circuit is controlled to reduce the pulse duration of the pulse signal. When the pulse of the current signal does not follow the pulse of the pulse signal, or the current signal is not detected, step-up control is performed on the first-stage boost sub-circuit. And after performing step-up control on the boost circuit, the peak current of the current signal is also detected. This method can solve the problem of inability to excite caused by the positive deviation of the pulse lamp, and the problem of shortened life due to excessive current caused by the negative deviation of the pulse lamp, improve the service life of the pulse lamp and reduce power consumption.

[0097] The present invention also proposes a computer-readable storage medium.

[0098] In this embodiment, a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, the control method of the pulse light generation circuit generator as described above is implemented.

[0099] The present invention also proposes a pulse light generator.

[0100] In this embodiment, as Figure 13 shown, the pulse light generator 400 includes: a pulse lamp 200, and a control device 300 for the pulse lamp as described above.

[0101] The present invention also proposes an air conditioner.

[0102] In this embodiment, as Figure 14 shown, the air conditioner 1000 includes a pulse light generator 400.

[0103] The storage medium, controller, pulsed light generator, and air conditioner according to the embodiments of the present invention, by the above control method of the pulsed lamp generator, detect the current signal of the pulsed lamp using a current detection circuit, and determine whether the current signal meets a preset condition according to the pulse signal. When it does not meet the preset condition, control is performed according to the specific current situation. The current signal includes a peak current and an average current, and a delay circuit is used to obtain the value of the peak current. When the peak current is greater than a first current threshold, step-down control is performed on the boost circuit. When the average current is greater than a second current threshold, the pulse control circuit is controlled to reduce the pulse duration of the pulse signal. When the pulse of the current signal does not follow the pulse of the pulse signal, or when the current signal is not detected, step-up control is performed on the boost circuit. And after performing step-up control on the boost circuit, the peak current of the current signal is also detected. This method can solve the problem of inability to excite caused by positive deviations such as pulses, and the problem of shortened lifespan due to excessive current caused by negative deviations such as pulses, improve the service life of the pulsed lamp, and reduce power consumption.

[0104] It should be noted that the logic and / or steps represented in the flowchart or described in other ways herein, for example, can be considered as a definite sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or in combination with these instruction execution systems, apparatus, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, then editing, interpreting, or otherwise processing it as appropriate, and then storing it in a computer memory.

[0105] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits with logic gate circuits for implementing logical functions on data signals, application specific integrated circuits with appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0106] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0107] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0108] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0109] In the present invention, unless otherwise clearly specified or limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0110] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0111] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A control device for a pulsed light generator, characterized in that, Including: A pulse control circuit configured to input a first control signal and output a pulse signal according to the first control signal; A boost circuit connected to the pulse control circuit, configured to input a working power supply voltage and a second control signal, boost the working power supply voltage according to the second control signal, and supply the boosted voltage to a pulse lamp under the action of the pulse signal to trigger the pulse lamp to emit light; A current detection circuit configured to detect the working current of the pulse lamp to obtain a current signal; A control unit connected to the pulse control circuit, the boost voltage, and the current detection circuit respectively, configured to adjust the first control signal and / or the second control signal according to the current signal when it is determined that the current signal does not meet a preset condition according to the pulse signal.

2. The device according to claim 1, characterized in that, A sampling resistor is connected in series in the power supply circuit of the pulse lamp, and the current detection circuit includes: A current-voltage conversion sub-circuit connected to the sampling resistor, configured to convert the sampling current of the sampling resistor into a voltage signal; An average current detection sub-circuit connected to the current-voltage conversion sub-circuit, configured to obtain an average current according to the voltage signal; A peak current detection sub-circuit connected to the current-voltage conversion sub-circuit, configured to obtain a peak current according to the voltage signal; A delay sub-circuit connected to the peak current detection sub-circuit, configured to perform a delay process on the peak current and then output it.

3. The device according to claim 2, characterized in that The current-voltage conversion sub-circuit includes a first resistor, a second resistor, a third resistor, and a first comparator; wherein, The first end of the first resistor is connected to the first end of the sampling resistor, the second end of the first resistor is connected to the positive input terminal of the first comparator, the first end of the second resistor is connected to the second end of the sampling resistor, the second end of the second resistor is respectively connected to the negative input terminal of the first comparator and the first end of the third resistor, the second end of the third resistor is connected to the output terminal of the first comparator, and the output terminal of the first comparator is respectively connected to the average current detection sub-circuit and the peak current detection sub-circuit.

4. The device according to claim 3, characterized in that, The peak current detection sub-circuit includes a fourth resistor, a fifth resistor, and a second comparator, and the delay sub-circuit includes a first capacitor; wherein, The first end of the fourth resistor is connected to a first preset power supply, the second end of the fourth resistor is respectively connected to the first end of the fifth resistor and the negative input terminal of the second comparator, the second end of the fifth resistor is grounded, the positive input terminal of the second comparator is connected to the output terminal of the first comparator, the output terminal of the second comparator is connected to the first end of the first capacitor and is configured to output the peak current, and the second end of the first capacitor is grounded.

5. The device according to claim 3, characterized in that, The average current detection sub-circuit includes a sixth resistor and a second capacitor; wherein, The first end of the sixth resistor is connected to the output terminal of the first comparator, the second end of the sixth resistor is connected to the first end of the second capacitor and is configured to output the average current, and the second end of the second capacitor is grounded.

6. The device according to claim 1, wherein The boost circuit includes: The first-level boost sub-circuit is configured to input the operating power supply voltage and the second control signal, and convert the operating power supply voltage into a first-level voltage according to the second control signal; The second-level boost sub-circuit is respectively connected to the first-level boost sub-circuit and the pulse control circuit, and is configured to boost the first-level voltage to a second-level voltage, and supply the second-level voltage to the pulse lamp under the action of the pulse signal to trigger the pulse lamp to emit light.

7. The device according to claim 6, characterized in that, The first-level boost sub-circuit includes: a first transformer, a first switching tube, a first diode, a seventh resistor, and a third capacitor; wherein, The first end of the primary coil of the first transformer is configured to input the operating power supply voltage, the cathode of the first diode is connected to the first end of the primary coil of the first transformer, the anode of the first diode is respectively connected to the first end of the third capacitor and the first end of the seventh resistor, the first end of the first switching tube is respectively connected to the second end of the third capacitor, the second end of the seventh resistor, and the second end of the primary coil of the first transformer, the second end of the first switching tube is grounded, the control end of the first switching tube is configured to input the second control signal, the first end of the secondary coil of the first transformer is connected to the second-level boost sub-circuit and is configured to connect to the first end of the pulse lamp, the second end of the secondary coil of the first transformer is grounded, wherein, the second end of the pulse lamp is connected to the second-level boost sub-circuit, and the third end of the pulse lamp is grounded.

8. The device according to claim 7, characterized in that, The second-level boost sub-circuit includes: a second transformer; wherein, The first end of the primary coil of the second transformer is connected to the first end of the secondary coil of the first transformer through a fourth capacitor, the first end of the secondary coil of the second transformer is configured to connect to the second end of the pulse lamp, and the second end of the primary coil of the second transformer is connected to the second end of the secondary coil of the second transformer and is grounded.

9. The device according to claim 8, characterized in that, The pulse control circuit includes: a thyristor, a second diode, an eighth resistor, a ninth resistor, and a tenth resistor; wherein, The anode of the thyristor is connected to the first end of the secondary coil of the first transformer and is connected to the third end of the pulse lamp through a fifth capacitor, the control end of the thyristor is respectively connected to the anode of the second diode and the first end of the eighth resistor and is configured to input the first control signal, the first end of the tenth resistor is connected to the first end of the ninth resistor, the second end of the ninth resistor is connected to a second preset power supply through a plurality of series resistors, and the cathode of the thyristor, the second end of the eighth resistor, the anode of the second diode, and the second end of the tenth resistor are all grounded.

10. A control method for a pulsed light generator, characterized in that, A control device for a pulse light generator according to any one of claims 1-9, the method comprising: Obtaining the pulse signal output by the pulse control circuit, and obtaining the operating current of the pulse lamp to obtain a current signal; Judging whether the current signal meets a preset condition according to the pulse signal; If the current signal does not meet the preset conditions, at least one of the boost circuit and the pulse control circuit is controlled according to the current signal to enable the pulse light generator to operate normally.

11. The method according to claim 10, characterized in that, The preset conditions include: The pulse of the current signal follows the pulse of the pulse signal, and the peak current is less than or equal to a first current threshold, and the average current is less than or equal to a second current threshold, where the peak current and the average current are obtained according to the current signal.

12. The method according to claim 10, wherein The boost circuit includes a first-stage boost sub-circuit and a second-stage boost sub-circuit. The first-stage boost sub-circuit is configured to convert the operating power supply voltage into a first-stage voltage. The second-stage boost sub-circuit is respectively connected to the first-stage boost sub-circuit and the pulse control circuit, and is configured to boost the first-stage voltage to a second-stage voltage and supply the second-stage voltage to the pulse lamp under the action of the pulse signal. Wherein, the controlling at least one of the boost circuit and the pulse control circuit according to the current signal includes: When the peak current is greater than the first current threshold, perform a step-down control on the first-stage boost sub-circuit; When the average current is greater than the second current threshold, control the pulse control circuit to reduce the pulse duration of the pulse signal; When the pulse of the current signal does not follow the pulse of the pulse signal, or when the current signal is not detected, perform a step-up control on the first-stage boost sub-circuit.

13. The method according to claim 12, characterized in that The performing a step-up control on the first-stage boost sub-circuit includes: Controlling the output voltage of the first-stage boost sub-circuit to increase step by step until the current signal corresponding to the increased output voltage meets the preset conditions, or the number of times of increasing the output voltage reaches a preset number of times, or the increased output voltage reaches a preset voltage limit.

14. The method according to claim 12 or 13, characterized in that, After controlling the first-stage boost sub-circuit, the method further includes: If the current signal meets the preset conditions, determine that the pulse lamp is operating normally, stop controlling the boost circuit, save the current control signal for the first-stage boost sub-circuit, and when the pulse light generator runs next time, control the first-stage boost sub-circuit according to the saved control signal.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the control method of the pulse light generator as described in any one of claims 10-14.

16. A pulsed light generator, characterized in that, Including: A pulse lamp, a control device for the pulse lamp as described in any one of claims 1-9.

17. An air conditioner, characterized in that, Including the pulse light generator as described in claim 16.

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