Power supply system for illumination device equipped with switching mechanism

Abstract

To provide a power supply system for illumination device equipped with switching mechanism.SOLUTION: A power supply system for illumination device equipped with a switching mechanism includes a plurality of power source controllers. Each power source controller includes a drive module, a sampling module and a control module. The drive module creates a driving voltage driving the illumination module. The sampling module samples the driving voltage to create a sampling voltage. The control module compares the sampling voltage with a default oscillation frequency range and a default oscillation amplitude threshold. The control module creates an abnormality determination result in the case where an oscillation frequency of the sampling voltage is not in the default oscillation frequency range, or in the case where an oscillation amplitude of the sampling voltage exceeds the default oscillation amplitude threshold.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a power supply system, in particular to a power supply system for a lighting device with a switching mechanism. [Background technology]

[0002] Lighting devices in many buildings, such as factories, airports, and parking lots, need to be kept on continuously for long periods of time. For this reason, the power controllers of conventional lighting devices are prone to failure of the lighting devices due to overheating or other reasons (such as aging of electronic components). When a lighting device fails, the brightness of the lighting device may decrease or the lighting device may experience a strobe phenomenon. In addition, when a lighting device overheats, the lighting device may burn out, which may lead to a fire or an accident. Conventional lighting device power controllers are not designed to address the above-mentioned situations, and therefore cannot solve the problems of the conventional technology.

[0003] Although CN Patent Publication No. 102711312 and CN Patent Publication No. 113099575 disclose improved power supply control techniques, they still cannot effectively solve the above problems. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] China Patent Application Publication No. 102711312 [Patent Document 2] China Patent Publication No. 113099575 Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a power supply system for a lighting device with a switching mechanism. [Means for solving the problem]

[0006] The present invention provides a power supply system for a lighting device with a switching mechanism including a plurality of power controllers. Each power controller includes a driving module, a sampling module, and a control module. The driving module generates a driving voltage for driving the lighting module. The sampling module samples the driving voltage to generate a sampling voltage. The control module compares the sampling voltage with a default oscillation frequency range and a default oscillation amplitude threshold. The control module generates an abnormality determination result when the oscillation frequency of the sampling voltage is not within the default oscillation frequency range or the oscillation amplitude of the sampling voltage exceeds the default oscillation amplitude threshold.

[0007] As an improvement of the present invention, after the control module generates an abnormality judgment result, the control module performs noise characteristic detection on the sampled voltage to generate a noise detection result, and if the noise detection result indicates that the sampled voltage does not have noise characteristics, sends a switching signal to another power supply controller to cause the another power supply controller to drive the lighting module.

[0008] As an improvement of the present invention, the control module performs noise characteristic detection, determines whether the abnormal portion of the sampled voltage is greater than a preset time threshold, and if the abnormal portion of the sampled voltage is greater than the preset time threshold, determines that the sampled voltage does not have the noise characteristic, and generates a corresponding noise detection result.

[0009] As an improvement of the present invention, after the control module generates an abnormality determination result, the control module performs noise feature detection on the sampled voltage to generate a noise detection result, and if the noise detection result indicates that the sampled voltage has noise characteristics, continues to drive the lighting module via the driving module.

[0010] As an improvement of the present invention, the control module performs a noise characteristic detection, determines whether an abnormal portion of the sampled voltage is greater than a preset time threshold, and determines that the sampled voltage has a noise characteristic if the abnormal portion of the sampled voltage is not greater than the preset time threshold, and generates a corresponding noise detection result.

[0011] As an improvement of the present invention, the power supply controller further includes a temperature control module for detecting an operating temperature of the power supply controller, and generating a warning signal when the operating temperature of the power supply controller is higher than a temperature threshold, and the control module sends a switching signal to another power supply controller according to the warning signal, causing the another power supply controller to drive the lighting module.

[0012] An improvement of the present invention further includes a timing module that sets the turn-on time of the drive module.

[0013] In a refinement of the invention, the timing module is a real time clock.

[0014] In one refinement of the invention, the control module is a CPU, a microcontroller, an application specific integrated circuit chip, or a field programmable logic gate array.

[0015] In one refinement of the invention, the lighting module is a light-emitting diode lamp. Effect of the Invention

[0016] Based on the above, a power supply system for a lighting device with a switching mechanism according to an embodiment of the present invention may have one or more of the following advantages. (1) A power supply system for a lighting device includes a plurality of power controllers. Each power controller includes a driving module, a sampling module, and a control module. The driving module generates a driving voltage for driving a lighting module. The sampling module samples the driving voltage to generate a sampling voltage. The control module compares the sampling voltage with a default oscillation frequency range and a default oscillation amplitude threshold. The control module generates an abnormality determination result when the oscillation frequency of the sampling voltage is not within the default oscillation frequency range or the oscillation amplitude of the sampling voltage exceeds the default oscillation amplitude threshold. With the above switching mechanism, the power supply system for a lighting device can drive a lighting device through any one of the power controllers, and when the power controller fails or cannot operate normally due to other reasons, the power supply system can switch from this power controller to another power controller. Therefore, the power supply system for a lighting device can avoid the operation time of any one of the power controllers being excessively long, extend the service life of these power controllers, and effectively ensure that the lighting device can operate normally. (2) The lighting power supply system can compare the sampling voltage with a default oscillation frequency range and a default oscillation amplitude threshold, and generates an abnormality determination result when the oscillation frequency of the sampling voltage is not within the default oscillation frequency range or the oscillation amplitude of the sampling voltage exceeds the default oscillation amplitude threshold. Therefore, the lighting power supply system can ensure that the lighting power supply system can always accurately determine whether the operating power supply controller is broken or cannot operate normally due to other reasons by considering the oscillation frequency and oscillation amplitude of the sampling voltage at the same time. (3) After the lighting power supply system generates an abnormality determination result, it performs noise characteristic detection on the sampled voltage to generate a noise detection result and determines whether the sampled voltage is affected by noise. Then, if the noise detection result indicates that the sampled voltage does not have noise characteristics, the lighting power supply system sends a switching signal to another power controller to drive the lighting module. Therefore, the lighting power supply system can determine the accuracy of the abnormality determination result through the above-mentioned noise detection mechanism and prevent the occurrence of a situation in which the switching mechanism is erroneously operated due to noise. In this way, the performance of the lighting power supply system can be greatly improved and the switching mechanism can be more accurately executed. (4) The lighting device power supply system includes a temperature control module. The temperature control module detects the operating temperature of the power controller, and generates a warning signal when the operating temperature of the power controller is higher than a temperature threshold. The control module sends a switching signal to another power controller according to the warning signal, causing the other power controller to drive the lighting module. Therefore, the lighting device power supply system has a temperature control mechanism to prevent the operating temperature of the power controller from becoming excessively high. In this way, the service life of all power controllers in the lighting device power supply system can be effectively extended, the occurrence of accidents can be reliably prevented, and the safety of the lighting device power supply system can be greatly improved. (5) The lighting power supply system further includes a timing module. The timing module can set the opening time of the driving module. Thus, a user can properly set the turn-on times of all the power controllers of the lighting power supply system through the timing module, and average the workload of these power controllers. Thus, the lighting power supply system can maintain high efficiency for a long period of time. (6) The lighting device power supply system is simple in design, can achieve the desired effect without significantly increasing the cost, and can provide many different functions at the same time. Therefore, the lighting device power supply system can meet the requirements of different applications and effectively solve the problems of existing technologies. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is an explanatory diagram of a power supply system for a lighting device including a switching mechanism according to a first embodiment of the present invention. [Diagram 2] 1 is a block diagram of a power supply controller of a power supply system for a lighting device including a switching mechanism according to a first embodiment of the present invention. [Diagram 3] FIG. 2 is an explanatory diagram of a sampling signal of the lighting device power supply system including a switching mechanism according to the first embodiment of the present invention. [Figure 4] 4A to 4C are explanatory diagrams of sampling signals including noise components of the lighting device power supply system including the switching mechanism according to the first embodiment of the present invention. [Diagram 5] FIG. 11 is a block diagram of a power supply controller of a power supply system for a lighting device including a switching mechanism according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] In the following embodiments, detailed features and advantages of the present invention are described, the contents of which are sufficient to enable those skilled in the art to understand the technical contents of the present invention and implement them accordingly, and the disclosure contents, claims and drawings in this specification enable those skilled in the art to easily understand the objectives and advantages of the present invention.

[0019] Hereinafter, an embodiment of a power supply system for a lighting device having a switching mechanism of the present invention will be described with reference to the related drawings. For ease of understanding and ease of description in the drawings, the dimensions and ratios of each member in the drawings may be exaggerated or reduced. In the following description and / or claims, when a member is described as being "connected" or "coupled" to another member, it may be directly connected or coupled to the other member, or an intermediate member may be present. When a member is described as being "directly connected" or "directly coupled" to another member, there is no intermediate member, and other terms for describing the relationship between members or layers should be interpreted in the same manner. For ease of understanding, the same members in the following embodiments will be denoted and described with the same reference numerals.

[0020] 1 and 2 are explanatory diagrams of a power supply system for a lighting device having a switching mechanism according to a first embodiment of the present invention, and a block diagram of a power controller. As shown in the figures, the power supply system for a lighting device 1 includes a plurality of power controllers 11, which are connected to a lighting device LD. One of the power controllers 11 may be in an on state to drive the lighting device LD. Each power controller 11 includes a driving module 112, a sampling module 113, a control module 111, a communication module 114, and a temperature control module 115. The driving module 112, the sampling module 113, the communication module 114, and the temperature control module 115 are connected to the control module 111.

[0021] The driving module 112 generates a driving voltage Ds to drive the lighting module LD. In this embodiment, the lighting module LD may be a light-emitting diode lamp. In another embodiment, the lighting module LD may be a fluorescent lamp, a light bulb, or other similar components. In this embodiment, the driving module 112 may be a light-emitting diode driver. In another embodiment, the driving module 112 may be a driver for other light sources.

[0022] The sampling module 113 is connected to the output terminal of the driving module 112, and samples the driving voltage Ds to generate a sampling voltage Hs. In this embodiment, the sampling module 113 can be a voltage sampling circuit, whose circuit structure is considered to be well known to those skilled in the art, and therefore will not be described in detail here.

[0023] The control module 111 compares the sampling voltage Hs with a default oscillation frequency range and a default oscillation amplitude threshold. If the oscillation frequency of the sampling voltage Hs is not within the default oscillation frequency range, the control module 111 generates an abnormality determination result. Similarly, if the oscillation amplitude of the sampling voltage Hs exceeds the default oscillation amplitude threshold, the control module 111 also generates an abnormality determination result. In this embodiment, the control module 111 may be a microcontroller (MCU). In another embodiment, the control module 111 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other similar components.

[0024] After the abnormality determination result is generated, the control module 111 performs noise characteristic detection on the sampling voltage Hs to detect the noise characteristic of the sampling voltage Hs, and determines whether the sampling voltage Hs has a noise component. Then, the control module 111 can generate a corresponding noise detection result. If the noise detection result indicates that the sampling voltage does not have a noise characteristic, the control module 111 determines that the sampling voltage Hs does not contain a noise component and the abnormality determination result is correct. Then, the control module 111 transmits a switching signal Cs to another power supply controller 11 via the communication module 114 to cause the other power supply controller 11 to drive the lighting module LD. In this embodiment, the communication module 114 may be a wired communication circuit. In this embodiment, the communication module 114 may be a wireless communication module, such as a Bluetooth (registered trademark) module, a WiFi communication module, a ZigBee communication module or other similar members. The circuit structure of the communication module 114 is well known to those skilled in the art, and will not be described in detail here.

[0025] Conversely, if the oscillation frequency of the sampling voltage Hs is within the default oscillation frequency range and the oscillation amplitude of the sampling voltage Hs does not exceed the default oscillation amplitude threshold, the control module 111 does not generate an abnormality determination result. In this situation, the control module 111 continues to drive the lighting module LD via the driving module 112.

[0026] With the above switching mechanism, the lighting device power supply system 1 drives the lighting device LD through one of the power controllers 11, and when the power controller 11 breaks down or does not operate normally due to other reasons, it can switch to another power controller 11. Therefore, the lighting device power supply system 1 can prevent the operation time of any one of the power controllers 11 from becoming excessively long, extend the service life of the power controller 11, and effectively ensure the normal operation of the lighting device LD.

[0027] Conversely, if the noise detection result indicates that the sampling voltage Hs has noise characteristics, the control module 111 determines that the sampling voltage Hs contains a noise component, and the abnormality determination result is incorrect. In this case, the control module 111 does not generate the switching signal Cs, and continues to drive the lighting module LD via the driving module 112.

[0028] The power supply controller 11 may cause a momentary abnormality in the driving voltage Ds due to weather (such as lightning) or other factors (turning on the power switch), so that the oscillation frequency of the sampling voltage Hs may temporarily be outside the default oscillation range and / or the oscillation amplitude of the sampling voltage Hs may temporarily exceed the default oscillation amplitude threshold. In the above case, an abnormality determination result may occur. However, the above case does not mean that the power supply controller 11 cannot operate normally, but that an external factor causes noise in the output voltage of the power supply controller 11, causing an erroneous abnormality determination result. Through the above-mentioned noise detection mechanism, the control module 111 can determine the accuracy of the abnormality determination result and prevent the switching mechanism from erroneously operating due to noise. In this way, the performance of the lighting device power supply system 1 is greatly improved and the switching mechanism can be executed more accurately.

[0029] In addition, as mentioned above, the lighting device power supply system 1 further includes a temperature control module 115. The temperature control module 115 can detect the operating temperature of the power controller 11, and generate a warning signal Ws when the operating temperature of the power controller 11 is higher than a temperature threshold. The control module 111 transmits a switching signal Cs to another power controller 11 according to the warning signal Ws, and makes the other power controller 11 drive the lighting module LD. In this embodiment, the temperature control module 115 may be various types of conventional temperature detectors (such as various electronic temperature detectors), and the circuit structure thereof is well known to those skilled in the art, and will not be described in detail here. Therefore, the lighting device power supply system 1 further includes a temperature control mechanism to prevent the operating temperature of the power controller 11 from becoming excessively high. In this way, the service life of all the power control devices 11 of the lighting device power supply system 1 can be effectively extended, accidents can be reliably prevented, and the safety of the lighting device power supply system 1 can be greatly improved.

[0030] Of course, this embodiment is only used for illustrative purposes and does not limit the scope of the present invention, and any equivalent modifications or alterations made based on the power supply system for a lighting device with a switching mechanism of this embodiment should still fall within the scope of protection of the present invention.

[0031] 3 and 4 are explanatory diagrams of a sampling signal of the lighting device power supply system having a switching mechanism according to the first embodiment of the present invention, and an explanatory diagram of the sampling signal including a noise component. As shown in FIG. 3, the control module 111 can compare the oscillation frequency of the sampling voltage Hs with a default oscillation frequency range, and the control module 111 can calculate the oscillation frequency of the sampling voltage Hs according to the period of the sampling voltage Hs, as shown in the following formula (1). F=1 / t (1)

[0032] Among these, T represents the oscillation period of the sampling voltage Hs (drive voltage Ds), and F represents the oscillation frequency of the sampling voltage Hs (drive voltage Ds).

[0033] The control module 111 stores a default oscillation frequency range, which is shown in the following equation (2). Fmin <F<Fmax (2)

[0034] Here, Fmin represents the minimum value of the oscillation frequency of the sampling voltage Hs (driving voltage Ds), and Fmax represents the maximum value of the oscillation frequency of the sampling voltage Hs (driving voltage Ds). Therefore, the above default oscillation frequency range is between Fmin and Fmax. Of course, the default oscillation frequency range can be adjusted to meet the needs of practical applications.

[0035] Therefore, the control module 111 can compare the oscillation frequency of the sampling voltage Hs with the default oscillation frequency range, and if the oscillation frequency of the sampling voltage Hs is not within the default oscillation frequency range, the control module 111 can determine that the power supply controller 11 may not operate normally (because the driving voltage Ds is abnormal), and generate an abnormality determination result.

[0036] The control module 111 can compare the oscillation amplitude of the sampling voltage Hs with the default oscillation amplitude threshold, and calculate the default oscillation amplitude threshold based on the maximum value of the driving voltage Ds and the minimum value of the driving voltage Ds, as shown in the following equation (3). △V=V2-V1 (3)

[0037] Wherein, V1 represents the minimum value of the sampling voltage Hs (driving voltage Ds), V2 represents the maximum value of the sampling voltage Hs (driving voltage Ds), and ΔV represents the default oscillation amplitude threshold. Of course, the default oscillation amplitude threshold can be adjusted to meet the needs of practical application.

[0038] Therefore, the control module 111 can compare the oscillation amplitude of the sampling voltage Hs with the default oscillation amplitude threshold value, and when the oscillation amplitude of the sampling voltage Hs is not at the default oscillation amplitude threshold value, the control module 111 can determine that the power controller 11 may not operate normally (because the driving voltage Ds is abnormal) and generate an abnormality determination result.

[0039] As shown in Figure 4, the control module 111 can perform noise characteristic detection. In this step, the control module 111 detects and determines whether the abnormal part Ns of the sampled voltage Hs is greater than the preset time threshold, and determines that the sampled voltage Hs has no noise characteristic when the abnormal part Ns of the sampled voltage Hs is greater than the preset time threshold, and generates a corresponding noise detection result (the noise component of the sampled voltage Hs is low); This is shown in the following equation (4). Ns <t0 (4)

[0040] Wherein, T0 represents a preset time threshold, which can of course be adjusted to meet the needs of actual response, that is, the sampled voltage Hs is indeed abnormal, and the abnormality judgment result is not influenced by external factors.

[0041] Conversely, the control module 111 detects and determines whether the abnormal portion Ns of the sampled voltage Hs is greater than the preset time threshold, and if the abnormal portion Ns of the sampled voltage Hs is greater than the preset time threshold, determines that the sampled voltage Hs has noise characteristics (the noise component of the sampled voltage Hs is large) and generates a corresponding noise detection result, that is, the sampled voltage Hs is not abnormal, and the abnormality determination result is only generated due to the influence of external factors.

[0042] Through the above-mentioned noise detection mechanism, the control module 111 can judge the accuracy of the abnormality judgment result and prevent the malfunction of the switching mechanism caused by noise. In this way, the performance of the lighting device power supply system 1 is greatly improved and the switching mechanism can be executed more accurately.

[0043] Of course, this embodiment is only used for illustrative purposes and does not limit the scope of the present invention, and any equivalent modifications or alterations made based on the power supply system for a lighting device with a switching mechanism of this embodiment should still fall within the scope of protection of the present invention.

[0044] In addition, the power controller of the conventional lighting device is prone to failure of the lighting device due to overheating or other causes (such as aging of electronic components). When the lighting device fails, the brightness of the lighting device may decrease or a stroboscopic phenomenon may occur in the lighting device. In addition, when the lighting device overheats, the lighting device may burn out, which may lead to a fire or an accident. In contrast, according to the first embodiment of the present invention, the power supply system for the lighting device includes multiple power controllers. Each power controller includes a driving module, a sampling module, and a control module. The driving module generates a driving voltage for driving the lighting module. The sampling module samples the driving voltage to generate a sampling voltage. The control module compares the sampling voltage with a default oscillation frequency range and a default oscillation amplitude threshold. The control module generates an abnormality determination result when the oscillation frequency of the sampling voltage is not within the default oscillation frequency range or when the oscillation amplitude of the sampling voltage exceeds the default oscillation amplitude threshold. With the above switching mechanism, the lighting device power supply system can drive the lighting device through any one of the power controllers, and when the power controller breaks down or cannot operate normally due to other reasons, the lighting device power supply system can switch from the power controller to another power controller. Therefore, the lighting device power supply system can avoid the operation time of any one of the power controllers from being excessively long, extend the service life of the power controllers, and effectively ensure that the lighting device can operate normally.

[0045] Furthermore, according to the first embodiment of the present invention, the power supply system for a lighting device can compare the sampling voltage with a default oscillation frequency range and a default oscillation amplitude threshold, and generates an abnormality determination result when the oscillation frequency of the sampling voltage is not within the default oscillation frequency range or the oscillation amplitude of the sampling voltage exceeds the default oscillation amplitude threshold. Therefore, the power supply system for a lighting device can ensure that the power supply system for a lighting device can always accurately determine whether the operating power supply controller is broken or cannot operate normally due to other reasons by considering the oscillation frequency and oscillation amplitude of the sampling voltage at the same time.

[0046] According to the first embodiment of the present invention, the lighting device power supply system performs noise characteristic detection on the sampled voltage after generating an abnormality determination result to generate a noise detection result and determine whether the sampled voltage is affected by noise. Next, if the noise detection result indicates that the sampled voltage does not have noise characteristics, the lighting device power supply system transmits a switching signal to another power controller to drive the lighting module. Thus, the lighting device power supply system can determine the accuracy of the abnormality determination result through the above-mentioned noise detection mechanism and prevent the occurrence of a situation in which the switching mechanism erroneously operates due to noise. In this way, the performance of the lighting device power supply system can be significantly improved and the switching mechanism can be executed more accurately.

[0047] Also, according to the first embodiment of the present invention, the power supply system for a lighting device includes a temperature control module. The temperature control module detects the operating temperature of the power controller, and generates a warning signal when the operating temperature of the power controller is higher than a temperature threshold. The control module sends a switching signal to another power controller according to the warning signal, causing the other power controller to drive the lighting module. Therefore, the power supply system for a lighting device has a temperature control mechanism to prevent the operating temperature of the power controller from becoming excessively high. In this way, the service life of all the power controllers in the power supply system for a lighting device can be effectively extended, the occurrence of accidents can be reliably prevented, and the safety of the power supply system for a lighting device can be greatly improved.

[0048] Furthermore, according to the first embodiment of the present invention, the design of the lighting device power supply system is simple, and the desired effect can be achieved without significantly increasing the cost, and at the same time, many different functions can be provided. Therefore, the lighting device power supply system can meet the requirements of different applications and effectively solve the problems of the existing technology. From the above, it can be seen that the lighting device power supply system with the switching mechanism of the embodiment of the present invention can indeed achieve very good technical effects.

[0049] 5 is a block diagram of a power supply controller of a lighting device power supply system having a switching mechanism according to a second embodiment of the present invention. As shown in the figure, the power supply controller 11 includes a driving module 112, a sampling module 113, a control module 111, a communication module 114, and a temperature control module 115. The driving module 112, the sampling module 113, the communication module 114, and the temperature control module 115 are connected to the control module 111.

[0050] The above components are the same as those in the first embodiment, and will not be described again here. Different from the first embodiment, in this embodiment, the power controller 11 further includes a timing module 116 that can be connected to the control module 111. The timing module 116 can set the turn-on time of the driving module 112. In this embodiment, the timing module 11 can be a real-time clock or other similar components.

[0051] Therefore, the user can properly set the turn-on times of all the power controllers 11 in the lighting device power supply system 1 through the timing module 116, and average the workload of these power controllers 11. Therefore, the lighting device power supply system 1 can maintain high performance for a long period of time.

[0052] Similarly, the temperature control module 115 can detect the operating temperature of the power controller 11, and generate a warning signal Ws when the operating temperature of the power controller 11 is higher than the temperature threshold. The control module 111 transmits a switching signal Cs to another power controller 11 according to the warning signal Ws, and causes the other power controller 11 to drive the lighting module LD. For this reason, the lighting device power supply system 1 further has a temperature control mechanism to prevent the operating temperature of the power controller 11 from becoming excessively high. In this way, the service life of all the power control devices 11 of the lighting device power supply system 1 can be effectively extended, the occurrence of accidents can be reliably prevented, and the safety of the lighting device power supply system 1 can be greatly improved.

[0053] Of course, this embodiment is only used for illustrative purposes and does not limit the scope of the present invention, and any equivalent modifications or alterations made based on the power supply system for a lighting device with a switching mechanism of this embodiment should still fall within the scope of protection of the present invention.

[0054] In summary, according to the first and second embodiments of the present invention, the power supply system for a lighting device includes a plurality of power controllers. Each power controller includes a driving module, a sampling module, and a control module. The driving module generates a driving voltage for driving the lighting module. The sampling module samples the driving voltage to generate a sampling voltage. The control module compares the sampling voltage with a default oscillation frequency range and a default oscillation amplitude threshold. The control module generates an abnormality determination result when the oscillation frequency of the sampling voltage is not within the default oscillation frequency range or the oscillation amplitude of the sampling voltage exceeds the default oscillation amplitude threshold. With the above switching mechanism, the power supply system for a lighting device can drive the lighting device through any one of the power controllers, and when the power controller fails or cannot operate normally due to other reasons, the power supply system can switch from this power controller to another power controller. Therefore, the power supply system for a lighting device can avoid the operation time of any one of the power controllers being excessively long, extend the service life of these power controllers, and effectively ensure that the lighting device can operate normally.

[0055] Furthermore, according to the first and second embodiments of the present invention, the power supply system for a lighting device can compare the sampling voltage with a default oscillation frequency range and a default oscillation amplitude threshold, and generates an abnormality determination result when the oscillation frequency of the sampling voltage is not within the default oscillation frequency range or the oscillation amplitude of the sampling voltage exceeds the default oscillation amplitude threshold. Therefore, the power supply system for a lighting device can ensure that the power supply system for a lighting device can always accurately determine whether the operating power supply controller is broken or cannot operate normally due to other reasons by considering the oscillation frequency and oscillation amplitude of the sampling voltage at the same time.

[0056] According to the first and second embodiments of the present invention, the lighting device power supply system performs noise characteristic detection on the sampled voltage after generating an abnormality determination result to generate a noise detection result and determine whether the sampled voltage is affected by noise. Next, if the noise detection result indicates that the sampled voltage does not have noise characteristics, the lighting device power supply system transmits a switching signal to another power controller to drive the lighting module. Thus, the lighting device power supply system can determine the accuracy of the abnormality determination result through the above-mentioned noise detection mechanism and prevent the occurrence of a situation in which the switching mechanism is erroneously operated due to noise. In this way, the performance of the lighting device power supply system can be significantly improved and the switching mechanism can be more accurately executed.

[0057] Also, according to the first and second embodiments of the present invention, the power supply system for a lighting device includes a temperature control module. The temperature control module detects the operating temperature of the power controller, and generates a warning signal when the operating temperature of the power controller is higher than a temperature threshold. The control module sends a switching signal to another power controller according to the warning signal, causing the other power controller to drive the lighting module. Therefore, the power supply system for a lighting device has a temperature control mechanism to prevent the operating temperature of the power controller from becoming excessively high. In this way, the service life of all the power controllers in the power supply system for a lighting device can be effectively extended, the occurrence of accidents can be reliably prevented, and the safety of the power supply system for a lighting device can be greatly improved.

[0058] Furthermore, according to the first and second embodiments of the present invention, the power supply system for a lighting device further includes a timing module. The timing module can set the opening time of the driving module. Therefore, a user can appropriately set the turn-on times of all the power controllers of the power supply system for a lighting device through the timing module, and average the workload of these power controllers. Therefore, the power supply system for a lighting device can maintain high efficiency for a long period of time.

[0059] Furthermore, according to the first and second embodiments of the present invention, the design of the power supply system for a lighting device is simple, the desired effect can be achieved without significantly increasing the cost, and many different functions can be provided at the same time, so that the power supply system for a lighting device can meet the requirements of different applications and effectively solve the problems of the existing technology.

[0060] Although the above embodiments are described in this specification, it should be noted that they do not limit the scope of the claims of the present invention. Therefore, the changes and modifications to the embodiments described in this specification based on the innovative concept of the present invention, or the replacement of equivalent structures or equivalent processes made using the contents of the specification and drawings of the present invention, and the direct or indirect application of the above technical solutions to other related technical fields are all included in the scope of the claims of the present invention. [Explanation of symbols]

[0061] 1. Power supply system for lighting equipment 11 Power supply controller 111 Control Module 112 Drive module 113 Sampling Module 114 Communication Module 115 Temperature Control Module 116 Timing Module Ds Drive voltage Hs Sampling Voltage Cs Switching signal T is the period of the sampling voltage WS warning signal Ns Abnormal portion of sampling voltage V1 Minimum sampling voltage V2 Maximum sampling voltage △V Default oscillation amplitude threshold LD lighting equipment

Claims

1. A plurality of power supply controllers, each of the power supply controllers comprising: a driving module that generates a driving voltage to drive the lighting module; a sampling module for sampling the driving voltage to generate a sampling voltage; a control module that compares the sampled voltage with a default oscillation frequency range and a default oscillation amplitude threshold; Including, The power supply system for a lighting device equipped with a switching mechanism, wherein the control module generates an abnormality determination result when the oscillation frequency of the sampling voltage is not within the default oscillation frequency range or when the oscillation amplitude of the sampling voltage exceeds the default oscillation amplitude threshold.

2. 2. A power supply system for a lighting device having a switching mechanism as described in claim 1, characterized in that after the control module generates the abnormality judgment result, the control module performs noise characteristic detection on the sampled voltage to generate a noise detection result, and if the noise detection result indicates that the sampled voltage does not have noise characteristics, sends a switching signal to another of the power supply controllers to cause the other of the power supply controllers to drive the lighting module.

3. 3. The power supply system for a lighting device with a switching mechanism according to claim 2, wherein the control module performs the noise characteristic detection, determines whether the abnormal portion of the sampled voltage is greater than a preset time threshold, and determines that the sampled voltage does not have noise characteristics if the abnormal portion of the sampled voltage is greater than a preset time threshold, and generates the corresponding noise detection result.

4. 2. The power supply system for a lighting device with a switching mechanism according to claim 1, characterized in that after the control module generates the abnormality determination result, the control module performs noise feature detection on the sampled voltage to generate a noise detection result, and if the noise detection result indicates that the sampled voltage has noise characteristics, continues to drive the lighting module via the driving module.

5. 5. The power supply system for a lighting device with a switching mechanism according to claim 4, wherein the control module performs the noise characteristic detection, determines whether the abnormal part of the sampled voltage is greater than a preset time threshold, and determines that the sampled voltage has noise characteristics if the abnormal part of the sampled voltage is not greater than a preset time threshold, and generates the corresponding noise detection result.

6. 2. The power supply system for a lighting device with a switching mechanism according to claim 1, further comprising a temperature control module for detecting an operating temperature of the power supply controller, and generating a warning signal when the operating temperature of the power supply controller is higher than a temperature threshold, and the control module sends a switching signal to another power supply controller according to the warning signal, causing the other power supply controller to drive the lighting module.

7. The power supply system for a lighting device with a switching mechanism as claimed in claim 1 , further comprising a timing module for setting a turn-on time of the driving module.

8. The lighting device power supply system with a switching mechanism according to claim 7, wherein the timing module is a real-time clock.

9. 2. The lighting device power supply system with a switching mechanism according to claim 1, wherein the control module is a CPU, a microcontroller, an application specific integrated circuit chip, or a field programmable logic gate array.

10. 2. The power supply system for lighting devices with a switching mechanism according to claim 1, wherein the lighting module is a light-emitting diode lamp.

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