CN112333891B - Lighting lamp fault prediction and health management device and method and railway vehicle - Google Patents
Lighting lamp fault prediction and health management device and method and railway vehicle Download PDFInfo
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- CN112333891B CN112333891B CN202011193729.7A CN202011193729A CN112333891B CN 112333891 B CN112333891 B CN 112333891B CN 202011193729 A CN202011193729 A CN 202011193729A CN 112333891 B CN112333891 B CN 112333891B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D29/00—Lighting
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/58—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving end of life detection of LEDs
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
The embodiment of the invention provides a device and a method for predicting faults and managing health of an illuminating lamp and a railway vehicle; the device comprises: the device comprises a working current acquisition module, a working voltage acquisition module, a working temperature acquisition module, an illumination acquisition module, an accumulated running time statistic module and a light attenuation detection calculation module; the light attenuation detection and calculation module 106 is configured to calculate a light attenuation value of the target lighting fixture according to a working current, a working voltage, a working temperature, illuminance data, an accumulated running time, and preset light attenuation curve data of the target lighting fixture. The device and the method for predicting the faults and managing the health of the lighting lamp can realize the fault prediction of the lighting lamp by collecting the working current, the working voltage, the working temperature and the illumination data of the target lighting lamp and the accumulated running time in real time and combining the preset light attenuation curve data.
Description
Technical Field
The invention relates to the technical field of electricity, in particular to a device and a method for lighting lamp fault prediction and health management and a railway vehicle.
Background
In the occasions of rail transit vehicles, auditoriums, waiting halls and the like, a large number of lighting lamps, in particular LED type lighting lamps are arranged. The large number of lighting fixtures inevitably results in complex back-end circuitry.
Once a lighting lamp fails, a fault point is difficult to find quickly by adopting a traditional manual groping mode.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a device and a method for lighting lamp fault prediction and health management and a railway vehicle.
An embodiment of a first aspect of the present invention provides a lighting fixture fault prediction and health management device, including: the system comprises a working current acquisition module 101, a working voltage acquisition module 102, a working temperature acquisition module 103, an illumination acquisition module 104, an accumulated running time statistic module 105 and a light attenuation detection calculation module 106; the working current acquisition module 101 is used for acquiring the working current of the target lighting lamp;
the working voltage acquisition module 102 is used for acquiring the working voltage of the target lighting lamp;
the working temperature acquisition module 103 is used for acquiring the working temperature of the target lighting lamp;
the illuminance acquisition module 104 is configured to acquire illuminance data of a preset position in the target lighting fixture;
the accumulated operation time counting module 105 is configured to count the accumulated operation time of the target lighting fixture;
the light attenuation detection and calculation module 106 is configured to calculate a light attenuation value of the target lighting fixture according to the working current, the working voltage, the working temperature, the illuminance data, the accumulated running time, and preset light attenuation curve data of the target lighting fixture.
In the above technical solution, the light attenuation detecting and calculating module 106 further includes:
a first light attenuation value calculating unit 1061, configured to calculate a first light attenuation value actually measured by the target lighting fixture at the current time according to the working current, the working voltage, and the illuminance data of the target lighting fixture;
a second light attenuation value calculating unit 1062, configured to calculate a theoretical second light attenuation value of the target lighting fixture at the current time according to the working current, the working temperature, the accumulated running time, and a preset light attenuation curve of the target lighting fixture;
a light attenuation value determining unit 1063, configured to determine a light attenuation value of the target lighting fixture according to the first light attenuation value and the second light attenuation value.
In the above technical solution, the apparatus further includes: a life calculation module;
the service life calculating module is used for judging whether the service life of the target lighting lamp reaches a preset service life threshold value or not according to the working current, the working temperature, the accumulated running time and preset light attenuation curve data of the target lighting lamp.
Among the above-mentioned technical scheme, the device still includes: a failure determination module;
and the fault judgment module judges whether the target lighting lamp is abnormal or not according to the working current and/or the working voltage of the target lighting lamp.
An embodiment of a second aspect of the present invention provides a method for predicting failure and managing health of an illumination fixture, where the method is implemented based on the apparatus for predicting failure and managing health of an illumination fixture provided by the embodiment of the first aspect of the present invention, and the method includes:
respectively collecting working current, working voltage, working temperature and illumination data and accumulated running time of the target lighting lamp at the current moment;
and calculating the light attenuation value of the target lighting lamp according to the working current, the working voltage, the working temperature, the illumination data, the accumulated running time and the preset light attenuation curve data of the target lighting lamp at the current moment.
In the above technical solution, calculating the light attenuation value of the target lighting fixture according to the working current, the working voltage, the working temperature, the illuminance data, the accumulated running time, and the preset light attenuation curve data of the target lighting fixture at the current time specifically includes:
calculating a first light attenuation value actually measured at the current moment according to the working current, the working voltage and the illumination data of the target lighting lamp at the current moment;
calculating a theoretical second light attenuation value at the current moment according to the working current, the working temperature, the accumulated running time and a preset light attenuation curve of the target lighting lamp at the current moment;
and determining the light attenuation value of the target lighting lamp according to the first light attenuation value and the second light attenuation value.
In the above technical solution, the calculating a first light attenuation value actually measured at the current time according to the working current, the working voltage and the illuminance data of the target lighting fixture at the current time includes:
calculating a first output power value and a corresponding first illuminance value of the target lighting lamp in a perfect state according to prestored working current, working voltage and illuminance data of the target lighting lamp in initial working;
calculating a second output power value and a corresponding second illumination value of the target lighting lamp at the current moment according to the working current, the working voltage and the illumination data of the target lighting lamp at the current moment;
and calculating a first light attenuation value actually measured at the current moment according to the first output power value, the first illumination value, the second output power value and the second illumination value.
In the above technical solution, the calculating a theoretical second light attenuation value at the current moment according to the working current, the working temperature, the accumulated running time and a preset light attenuation curve of the target lighting fixture at the current moment includes:
determining a light attenuation curve according to the working current and the working temperature of the target lighting lamp;
calculating an accumulated operation time correction value of the target lighting lamp according to the working current, the working temperature and the accumulated operation time of the target lighting lamp;
and according to the accumulated running time correction value of the target lighting lamp, combining the light attenuation curve to obtain a theoretical second light attenuation value at the current moment.
In the above technical solution, the method further comprises:
and judging whether the service life of the target lighting lamp reaches a preset life threshold value or not according to the working current, the working temperature, the accumulated running time and preset light attenuation curve data of the target lighting lamp.
In the above technical solution, the method further includes:
and judging whether the target lighting lamp is abnormal or not according to the working current and/or the working voltage of the target lighting lamp.
The device and the method for predicting the faults of the lighting lamp and managing the health of the lighting lamp and the railway vehicle can realize the fault prediction of the lighting lamp by collecting the working current, the working voltage, the working temperature and the illumination data of the target lighting lamp and the accumulated running time in real time and combining the preset light attenuation curve data.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a lighting fixture failure prediction and health management apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a light attenuation detection and calculation module in the lighting fixture fault prediction and health management apparatus provided in the embodiment of the present invention;
FIG. 3 is a schematic diagram of a light decay curve according to an embodiment of the present invention;
fig. 4 is a flowchart of a method for predicting failure and managing health of a lighting fixture according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Fig. 1 is a schematic diagram of a lighting fixture fault prediction and health management device according to an embodiment of the present invention, and as shown in fig. 1, the lighting fixture fault prediction and health management device according to the embodiment of the present invention includes: the device comprises a working current acquisition module 101, a working voltage acquisition module 102, a working temperature acquisition module 103, an illumination acquisition module 104, an accumulated running time statistic module 105 and a light attenuation detection calculation module 106.
Specifically, the working current collecting module 101 is configured to collect a working current of the target lighting fixture. In the embodiment of the present invention, the working current collecting module 101 is implemented by using a current sensor, and is installed inside the target lighting fixture.
The working voltage collecting module 102 is configured to collect a working voltage of the target lighting fixture. In the embodiment of the present invention, the working voltage collecting module 102 is implemented by a voltage attenuator, and is installed inside the target lighting fixture.
The working temperature acquisition module 103 is used for acquiring real-time temperature data of the target lighting lamp during working. In the embodiment of the present invention, the working temperature acquisition module 103 is implemented by using a temperature sensor, and is installed inside the target lighting fixture.
The illuminance acquisition module 104 is configured to acquire illuminance data of the target lighting fixture at a predetermined position during operation. In the embodiment of the present invention, the illuminance acquisition module 104 is implemented by a brightness sensor, and is installed at a preset position inside the target lighting fixture.
The accumulated running time statistics module 105 is configured to collect accumulated running times of the target lighting fixture. In an embodiment of the present invention, the accumulated running time statistics module 105 may be implemented by a memory inside the controller.
The light attenuation detection and calculation module 106 is configured to calculate a light attenuation value of the target lighting fixture according to the working current, the working voltage, the working temperature, the illuminance data, the accumulated running time, and the preset light attenuation curve data of the target lighting fixture. The light decay detection calculation module 106 may be implemented on the controller.
As is known to those skilled in the art, the luminous flux maintenance of a lighting fixture decreases as the fixture is used over time. If the luminous flux of the lighting fixture is 100% when the lighting fixture is used, the luminous flux of the lighting fixture gradually changes to 95%, 90%, 85%, 80% and the like of the initial luminous flux as the use time becomes longer. This ratio is called the luminous flux maintenance ratio. The decrease in the luminous flux maintenance ratio from the initial value is referred to as a luminous decay value, and when the luminous flux maintenance ratio becomes 70%, the corresponding luminous decay value is 0.3 (30%). The light attenuation detection and calculation module 106 is used for calculating the light attenuation value of the target lighting fixture at the current moment.
Fig. 2 is a schematic diagram of a light attenuation detection and calculation module in the lighting fixture fault prediction and health management apparatus provided in the embodiment of the present invention, and as shown in fig. 2, the light attenuation detection and calculation module further includes:
a first light attenuation value calculating unit 1061, configured to calculate, according to the working current, the working voltage, and the illuminance data of the target lighting fixture, a first light attenuation value actually measured by the target lighting fixture at the current moment;
a second light attenuation value calculating unit 1062, configured to calculate a theoretical second light attenuation value of the target lighting fixture at the current time according to the working current, the working temperature, the accumulated running time, and a preset light attenuation curve of the target lighting fixture;
a light attenuation value determining unit 1063, configured to determine a light attenuation value of the target lighting fixture according to the first light attenuation value and the second light attenuation value.
Specifically, the first light attenuation value calculating unit 1061 may obtain the first output power value and the corresponding first illuminance value of the target lighting fixture in a sound state according to the working current data, the working voltage data, and the illuminance data when the target lighting fixture initially works (i.e., a brand-new target lighting fixture is just used). The first light attenuation value calculating unit 1061 may obtain a second output power value and a corresponding second illuminance value of the target lighting fixture after the target lighting fixture works for a period of time according to the working current data, the working voltage data, and the illuminance data of the target lighting fixture at the current time. And calculating a first light attenuation value actually measured by combining the first output power value, the first illumination value, the second output power value and the second illumination value. For example, when the first output power value is the same as the second output power value, the second illuminance value is compared with the first illuminance value to obtain the luminous flux maintenance ratio, and then the first light attenuation value is obtained.
The second light attenuation value calculating unit 1062 may obtain a theoretical second light attenuation value according to the working current data, the working temperature data, the accumulated running time data, and the light attenuation curve.
In the embodiment of the present invention, the light attenuation curve is a curve for reflecting the change of the brightness of the LED with time. Fig. 3 is a schematic diagram of a light attenuation curve according to an embodiment of the present invention, and as shown in fig. 3, the abscissa of the light attenuation curve is a time value and the ordinate is a luminous flux maintenance rate.
The light decay curve is well known to those skilled in the art and can be obtained from the existing technical data. The light decay curve is obtained as reported by LED-LM-80.
It should be noted that the light attenuation curve is related to the operating conditions of the LED, and when the operating conditions (including the operating temperature and the operating current) of the LED are different, the light attenuation curve is different. For example, the working condition of "55 ℃,60mA" may correspond to one light attenuation curve, the working condition of "85 ℃,60mA" may correspond to another light attenuation curve, and the working condition of "105 ℃,60mA" may correspond to one light attenuation curve. When the light attenuation curve is applied, a specific light attenuation curve can be selected according to working conditions.
The specific implementation process of obtaining the theoretical second light attenuation value according to the light attenuation curve by the second light attenuation value calculating unit 1062 includes:
firstly, real-time working conditions of the target lighting lamp are determined.
For example, according to the data collected by the operating current collecting module 101 and the operating temperature collecting module 103, the real-time operating temperature of the target lighting fixture is determined to be about 40 ℃, and the operating current is determined to be about 30Ma.
Next, a light decay curve is determined.
Different working conditions can correspond to different light attenuation curves, so that the corresponding light attenuation curves need to be determined according to the real-time working conditions of the target lighting lamp.
It is known that the light attenuation curve corresponds to a plurality of standard working condition conditions, such as "55 ℃,60mA", "85 ℃,60mA", "105 ℃,60mA", and if the real-time working condition of the target lighting fixture can be consistent with one of the standard working condition conditions, the light attenuation curve corresponding to the consistent standard working condition is the light attenuation curve corresponding to the target lighting fixture. And if the consistent standard working condition cannot be found, taking the light attenuation curve corresponding to the closest standard working condition as the light attenuation curve corresponding to the target lighting lamp.
For example, the real-time operating temperature of the target lighting fixture is about 40 ℃ and the operating current is about 30Ma. According to the LED-LM-80 report, no completely consistent standard operating conditions exist, so the closest standard operating conditions are selected, namely the operating temperature is 55 ℃ and the operating current is 60mA. And determining the light attenuation curve corresponding to the standard working condition as the light attenuation curve corresponding to the target lighting lamp.
Then, the cumulative operating time correction value of the target lighting fixture is calculated.
As described above, the actual operating condition of the target lighting fixture may not completely match the standard operating condition preset in the light attenuation curve, which may cause the time value of the target lighting fixture to deviate from the time value in the light attenuation curve. Therefore, the accumulated operation time of the target lighting fixture needs to be corrected according to the actual working conditions.
The formula for correcting the accumulated running time is as follows:
t1＝t2×K(T)×K(A)；
wherein T1 is an accumulated operation time correction value of the target lighting lamp, T2 is an accumulated operation time value of the target lighting lamp obtained through measurement, K (T) is a temperature influence coefficient, and K (a) is a current influence coefficient.
If the actual working temperature of the target lighting fixture is higher than the working temperature in the standard working condition, the value of the temperature influence coefficient K (T) is larger, and if the actual working current of the target lighting fixture is higher than the working current in the standard working condition, the value of the current influence coefficient K (a) is larger. For example, if the actual operating temperature of the target lighting fixture is less than or equal to the operating temperature in the standard operating condition, the value of the temperature influence coefficient K (T) is 1, and if the actual operating temperature of the target lighting fixture is greater than the operating temperature in the standard operating condition, the value of the temperature influence coefficient K (T) is 1.2. For another example, if the actual working current of the target lighting fixture is less than or equal to the working current in the standard working condition, the value of the current influence coefficient K (a) is 1; if the actual working current of the target lighting lamp is larger than the working current under the standard working condition, the value of the current influence coefficient K (A) is 1.2.
And finally, according to the accumulated running time correction value of the target lighting lamp, combining the light attenuation curve to obtain a second light attenuation value of the target lighting lamp.
In the previous description of the light attenuation curve, it has been mentioned that the abscissa of the light attenuation curve is a time value, the ordinate is a luminous flux maintenance rate, and the accumulated operation time correction value of the target lighting fixture corresponds to the abscissa of the light attenuation curve, so that the corresponding luminous flux maintenance rate, for example, 80%, can be obtained. The luminous flux maintenance rate is reduced by 100%, and the obtained luminous decay value is the theoretical second luminous decay value.
After the first light attenuation value actually measured and the second light attenuation value theoretically obtained, the light attenuation value determining unit 1063 compares the first light attenuation value and the second light attenuation value to obtain the light attenuation value of the target lighting fixture.
In the embodiment of the invention, if the first light attenuation value is less than or equal to the second light attenuation value, the second light attenuation value is taken as the light attenuation value of the target lighting lamp; and if the first light attenuation value is larger than the second light attenuation value, taking the first light attenuation value as the light attenuation value of the target lighting lamp.
After the light attenuation value of the target lamp is obtained, the light attenuation detection calculation module 106 may output the value for reference by the maintenance personnel. For example, in the process of maintenance of the rail vehicle, the light attenuation value of some lighting fixtures is found to be more than 25%, and although the lighting fixtures are not damaged, the lighting fixtures can be replaced in advance in the process of maintenance.
The light attenuation detecting and calculating module 106 may also compare the light attenuation value of the target lighting fixture with a preset light attenuation threshold (e.g., 30%), and if the light attenuation value is greater than or equal to the light attenuation threshold, it is determined that the target lighting fixture is about to fail, so that information that the target lighting fixture has reached the light attenuation threshold is transmitted to the outside to allow a maintenance worker to replace the lighting fixture in time.
The device for predicting the faults and managing the health of the lighting lamp can predict the faults of the lighting lamp by collecting the working current, the working voltage, the working temperature and the illumination data of the target lighting lamp and the accumulated running time in real time and combining the preset light attenuation curve data.
Based on any one of the above embodiments, in another embodiment of the present invention, the apparatus further includes: a life calculation module;
the service life calculating module is used for judging whether the service life of the target lighting lamp reaches a preset service life threshold value or not according to the working current, the working temperature, the accumulated running time and preset light attenuation curve data of the target lighting lamp.
Specifically, the service life calculation module calculates the accumulated operation time correction value of the target lighting lamp according to four parameters, namely, the working temperature data, the working current data, the light attenuation curve data and the accumulated operation time data of the target lighting lamp. And then comparing the calculated accumulated running time correction value with a preset service life threshold, and if the accumulated running time correction value is greater than or equal to the preset service life threshold, sending early warning information reaching the service life threshold to the outside by a service life calculation module.
How to calculate the cumulative operating time correction value of the target lighting fixture is explained in detail in the previous description, and therefore is not repeated here.
The preset lifetime threshold may be related to a light attenuation threshold, such as a time value corresponding to the light attenuation threshold in the light attenuation curve.
The device for predicting the fault and managing the health of the lighting lamp can realize the service life calculation of the lighting lamp by collecting the working current, the working temperature and the accumulated running time of the target lighting lamp in real time and combining the preset light attenuation curve data.
Based on any one of the above embodiments, in another embodiment of the present invention, the apparatus further includes: and a fault judgment module.
And the fault judgment module judges whether the target lighting lamp is abnormal or not according to the working current and/or the working voltage of the target lighting lamp.
Specifically, the fault determination module is connected to the working current collection module 101 and the working voltage collection module 102, and is configured to receive and store working current data and/or working voltage data of the target lighting fixture, analyze the working current data and/or the working voltage data, and determine whether the target lighting fixture is abnormal according to an analysis result.
For example, it is found from the analysis result that the current of the target lighting fixture is significantly increased, and it can be determined that the light source of the target lighting fixture may be short-circuited. For example, in one embodiment, the working current of the target lighting fixture during daily work is 1A, and if it is found that the real-time working current of the target lighting fixture is 2A during detection, it is determined that a short circuit condition may occur.
For another example, if the current of the target lighting fixture is found to be significantly reduced or zero according to the analysis result, it may be determined that the target lighting fixture may be open-circuited or the connector may be detached. For example, in one embodiment, the working current of the target lighting fixture during daily work is 1A, and if the real-time working current of the target lighting fixture is found to be 0.1A during detection, it is determined that an open circuit condition may occur.
When the target lighting lamp is abnormal, the abnormal information and the identification information of the target lighting lamp are transmitted to the control equipment of the lighting system, so that maintenance personnel can know which lighting lamp fails. Since the control device of the lighting system is not part of the device for predicting failure and managing health of the lighting fixtures according to the embodiment of the present invention, the control device of the lighting system will not be further described herein.
The device for predicting the faults and managing the health of the lighting lamp can timely find the faults possibly occurring in the target lighting lamp by collecting the working current and the working voltage of the target lighting lamp in real time, and is convenient for managers to quickly find out fault points.
Based on any of the above embodiments, fig. 4 is a flowchart of a method for predicting failure and managing health of an illumination fixture according to an embodiment of the present invention, and as shown in fig. 4, the method for predicting failure and managing health of an illumination fixture according to an embodiment of the present invention includes:
Specifically, the calculating the light attenuation value of the target lighting fixture according to the working current, the working voltage, the working temperature, the illuminance data, the accumulated running time and the preset light attenuation curve data of the target lighting fixture at the current moment further includes:
calculating a first light attenuation value actually measured at the current moment according to the working current, the working voltage and the illumination data of the target lighting lamp at the current moment;
calculating a theoretical second light attenuation value at the current moment according to the working current, the working temperature, the accumulated running time and a preset light attenuation curve of the target lighting lamp at the current moment;
and determining the light attenuation value of the target lighting lamp according to the first light attenuation value and the second light attenuation value.
The calculating of the first light attenuation value obtained by actual measurement at the current moment according to the working current, the working voltage and the illumination data of the target lighting lamp at the current moment includes:
calculating a first output power value and a corresponding first illuminance value of the target lighting lamp in an intact state according to pre-stored working current, working voltage and illuminance data of the target lighting lamp in initial working;
calculating a second output power value and a corresponding second illumination value of the target lighting lamp at the current moment according to the working current, the working voltage and the illumination data of the target lighting lamp at the current moment;
and calculating a first light attenuation value actually measured at the current moment according to the first output power value, the first illumination value, the second output power value and the second illumination value.
The calculating a theoretical second light attenuation value at the current moment according to the working current, the working temperature, the accumulated running time and a preset light attenuation curve of the target lighting lamp at the current moment comprises the following steps:
determining a light attenuation curve according to the working current and the working temperature of the target lighting lamp;
calculating an accumulated operation time correction value of the target lighting lamp according to the working current, the working temperature and the accumulated operation time of the target lighting lamp;
and obtaining a theoretical second light attenuation value at the current moment by combining the light attenuation curve according to the accumulated running time correction value of the target lighting lamp.
Determining the light attenuation value of the target lighting fixture according to the first light attenuation value and the second light attenuation value specifically includes: if the first light attenuation value is smaller than or equal to the second light attenuation value, taking the second light attenuation value as the light attenuation value of the target lighting lamp; and if the first light attenuation value is larger than the second light attenuation value, taking the first light attenuation value as the light attenuation value of the target lighting lamp.
According to the method for predicting the faults and managing the health of the lighting lamp, provided by the embodiment of the invention, the faults of the lighting lamp can be predicted by collecting the working current, the working voltage, the working temperature and the illumination data of the target lighting lamp in real time and integrating the preset light attenuation curve data.
Based on any of the above embodiments, in an embodiment of the present invention, the method further includes: and judging whether the service life of the target lighting lamp reaches a preset life threshold value or not according to the working current, the working temperature, the accumulated running time and preset light attenuation curve data of the target lighting lamp.
Specifically, the accumulated operation time correction value of the target lighting lamp is calculated through four parameters of working temperature data, working current data, light attenuation curve data and accumulated operation time data of the target lighting lamp. And then comparing the calculated accumulated operation time correction value with a preset service life threshold, and if the accumulated operation time correction value is greater than or equal to the preset service life threshold, externally sending early warning information that the service life of the target lighting lamp reaches the service life threshold.
According to the method for predicting the fault and managing the health of the lighting lamp, provided by the embodiment of the invention, the service life of the lighting lamp can be calculated by collecting the working current, the working temperature and the accumulated running time of the target lighting lamp in real time and combining the preset light attenuation curve data.
Based on any of the above embodiments, in an embodiment of the present invention, the method further includes: and judging whether the target lighting lamp is abnormal or not according to the working current and/or the working voltage of the target lighting lamp.
Specifically, the working current data and/or the working voltage data are/is analyzed, and whether the target lighting lamp is abnormal or not is judged according to the analysis result.
For example, the current of the target lighting fixture is found to be significantly increased according to the analysis result, and it can be determined that the light source of the target lighting fixture may be in a short circuit condition. For example, in one embodiment, the working current of the target lighting fixture during daily work is 1A, and if the real-time working current of the target lighting fixture is found to be 2A during detection, it is determined that a short circuit condition may occur.
For another example, if the current of the target lighting fixture is obviously reduced or zero according to the analysis result, it may be determined that the target lighting fixture may be opened or the connector may be detached. For example, in one embodiment, the working current of the target lighting fixture during daily work is 1A, and if it is found that the real-time working current of the target lighting fixture becomes 0.1A during detection, it is determined that an open circuit condition may occur.
According to the method for predicting the faults and managing the health of the lighting lamp, provided by the embodiment of the invention, the faults possibly occurring in the target lighting lamp can be found in time by collecting the working current and the working voltage of the target lighting lamp in real time, so that managers can conveniently and quickly find out the fault points.
Based on any one of the embodiments, another embodiment of the present invention further provides a rail vehicle, including:
the device for predicting the faults of the lighting lamp and managing the health of the lighting lamp.
The rail vehicle provided by the embodiment of the invention is provided with the device for predicting the faults of the illuminating lamps and managing the health of the illuminating lamps, and the service life of the illuminating lamps can be calculated by collecting the working current, the working temperature and the accumulated running time of the target illuminating lamps in real time and combining the preset light attenuation curve data.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A lighting fixture failure prediction and health management apparatus, comprising: the device comprises a working current acquisition module (101), a working voltage acquisition module (102), a working temperature acquisition module (103), an illumination acquisition module (104), an accumulated running time statistic module (105) and a light attenuation detection calculation module (106); the working current acquisition module (101) is used for acquiring the working current of the target lighting lamp;
the working voltage acquisition module (102) is used for acquiring the working voltage of the target lighting lamp;
the working temperature acquisition module (103) is used for acquiring the working temperature of the target lighting lamp;
the illumination acquisition module (104) is used for acquiring illumination data of a preset position in the target lighting lamp;
the accumulated operation time counting module (105) is used for counting the accumulated operation time of the target lighting lamp;
the light attenuation detection calculation module (106) is used for calculating a light attenuation value of the target lighting lamp according to the working current, the working voltage, the working temperature, the illumination data, the accumulated running time and preset light attenuation curve data of the target lighting lamp;
the light decay detection calculation module (106) further comprises:
a first light attenuation value calculating unit (1061) for calculating a first light attenuation value actually measured by the target lighting fixture at the current moment according to the working current, the working voltage and the illuminance data of the target lighting fixture;
the second light attenuation value calculating unit (1062) is used for calculating a theoretical second light attenuation value of the target lighting fixture at the current moment according to the working current, the working temperature, the accumulated running time and a preset light attenuation curve of the target lighting fixture;
a light attenuation value determination unit (1063) for performing the following determination: if the first light attenuation value is smaller than or equal to the second light attenuation value, taking the second light attenuation value as the light attenuation value of the target lighting lamp; if the first light attenuation value is larger than the second light attenuation value, taking the first light attenuation value as the light attenuation value of the target lighting lamp;
after the light attenuation value of the target lamp is obtained, the light attenuation detection calculation module can output the value for the reference of maintenance personnel;
the light attenuation detection and calculation module can also compare the light attenuation value of the target lighting lamp with a preset light attenuation threshold value, if the light attenuation value is greater than or equal to the light attenuation threshold value, the target lighting lamp is considered to be about to fail, and therefore information that the target lighting lamp reaches the light attenuation threshold value is transmitted to the outside so that maintenance personnel can replace the lighting lamp in time.
2. The lighting fixture fault prediction and health management device of claim 1, further comprising: a life calculating module;
the service life calculating module is used for judging whether the service life of the target lighting lamp reaches a preset service life threshold value or not according to the working current, the working temperature, the accumulated running time and preset light attenuation curve data of the target lighting lamp.
3. The lighting fixture fault prediction and health management device of claim 1 or 2, further comprising: a fault determination module;
and the fault judgment module judges whether the target lighting lamp is abnormal or not according to the working current and/or the working voltage of the target lighting lamp.
4. A method for failure prediction and health management of a lighting fixture, the method being implemented based on the device for failure prediction and health management of a lighting fixture as claimed in any one of claims 1 to 3, the method comprising:
respectively collecting working current, working voltage, working temperature, illumination data and accumulated running time of the target lighting lamp at the current moment;
calculating a light attenuation value of the target lighting lamp according to the working current, the working voltage, the working temperature, the illumination data, the accumulated running time and preset light attenuation curve data of the target lighting lamp at the current moment;
calculating a first light attenuation value actually measured by the target lighting lamp at the current moment according to the working current, the working voltage and the illumination data of the target lighting lamp;
calculating a theoretical second light attenuation value of the target lighting lamp at the current moment according to the working current, the working temperature, the accumulated running time and a preset light attenuation curve of the target lighting lamp;
if the first light attenuation value is smaller than or equal to the second light attenuation value, taking the second light attenuation value as the light attenuation value of the target lighting lamp; if the first light attenuation value is larger than the second light attenuation value, taking the first light attenuation value as the light attenuation value of the target lighting lamp;
after the light attenuation value of the target lamp is obtained, the light attenuation detection calculation module can output the value for the reference of maintenance personnel;
the light attenuation detection calculation module can also compare the light attenuation value of the target lighting lamp with a preset light attenuation threshold value, if the light attenuation value is greater than or equal to the light attenuation threshold value, the target lighting lamp is considered to be about to break down, and therefore information that the target lighting lamp reaches the light attenuation threshold value is transmitted to the outside, and maintenance personnel can replace the lighting lamp in time.
5. The method as claimed in claim 4, wherein the calculating a first light attenuation value actually measured at a current moment according to the working current, the working voltage and the illuminance data of the target lighting fixture at the current moment comprises:
calculating a first output power value and a corresponding first illuminance value of the target lighting lamp in a perfect state according to prestored working current, working voltage and illuminance data of the target lighting lamp in initial working;
calculating a second output power value and a corresponding second illumination value of the target lighting lamp at the current moment according to the working current, the working voltage and the illumination data of the target lighting lamp at the current moment;
and calculating a first light attenuation value actually measured at the current moment according to the first output power value, the first illumination value, the second output power value and the second illumination value.
6. The method as claimed in claim 4, wherein the calculating a theoretical second light attenuation value at the current time according to the working current, the working temperature, the accumulated running time and the preset light attenuation curve of the target lighting fixture at the current time comprises:
determining a light attenuation curve according to the working current and the working temperature of the target lighting lamp;
calculating an accumulated operation time correction value of the target lighting lamp according to the working current, the working temperature and the accumulated operation time of the target lighting lamp;
and obtaining a theoretical second light attenuation value at the current moment by combining the light attenuation curve according to the accumulated running time correction value of the target lighting lamp.
7. The method of claim 4, wherein the method further comprises:
and judging whether the service life of the target lighting lamp reaches a preset life threshold value or not according to the working current, the working temperature, the accumulated running time and preset light attenuation curve data of the target lighting lamp.
8. The method of claim 4 or 7, wherein the method further comprises:
and judging whether the target lighting lamp is abnormal or not according to the working current and/or the working voltage of the target lighting lamp.
9. A rail vehicle, comprising: the lighting fixture failure prediction and health management device of any of claims 1 to 3.
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| CN113597068B (en) * | 2021-07-29 | 2024-03-29 | 北京建院图茂科技有限公司 | Control method and system based on station illumination |
| CN116017829A (en) * | 2022-12-30 | 2023-04-25 | 亚翔系统集成科技（苏州）股份有限公司 | Dust-free room lamp service life monitoring method |
| CN118201180A (en) * | 2024-04-16 | 2024-06-14 | 广东翔龙新能源有限公司 | Intelligent illumination management system based on combination of cloud control and illumination equipment management |
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