CN111722074A - LED identification label fault positioning method, device and system - Google Patents

LED identification label fault positioning method, device and system Download PDF

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Publication number
CN111722074A
CN111722074A CN202010493194.9A CN202010493194A CN111722074A CN 111722074 A CN111722074 A CN 111722074A CN 202010493194 A CN202010493194 A CN 202010493194A CN 111722074 A CN111722074 A CN 111722074A
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led
parameter information
sign
led identification
fault
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CN111722074B (en
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李忠训
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Blueview Elec Optic Tech Co Ltd
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Blueview Elec Optic Tech Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/26—Testing of individual semiconductor devices
    • G01R31/2607—Circuits therefor
    • G01R31/2632—Circuits therefor for testing diodes
    • G01R31/2635—Testing light-emitting diodes, laser diodes or photodiodes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The application provides a method, a device and a system for positioning faults of an LED identification sign, wherein the method comprises the following steps: acquiring operation parameter information of the LED identification label; judging whether the LED identification label has a fault according to the operation parameter information of the LED identification label; if yes, acquiring a display interface image of the LED identification label; and determining the position of the LED light-emitting device with the fault in the LED identification sign according to the display interface image of the LED identification sign.

Description

LED identification label fault positioning method, device and system
Technical Field
The application relates to the technical field of LED fault positioning, in particular to a method, a device and a system for positioning faults of an LED identification sign.
Background
The LED (Light Emitting Diode) identification label comprises a shop sign, an advertising lamp box and the like, the LED identification label is generally placed at a high place for enabling a user to easily see and further carry out advertising, but the existing LED identification label cannot carry out fault detection without obtaining good safety protection during operation, and meanwhile, the LED identification label is generally placed at the high place and cannot carry out fault location by naked eyes when a small-area fault occurs.
Disclosure of Invention
An object of the embodiments of the present application is to provide a method, an apparatus, and a system for locating a failure of an LED identification plate, so as to solve the problem that the existing LED identification plate cannot detect a failure and cannot locate a failure by naked eyes when a small-area failure occurs.
In a first aspect, an embodiment of the present invention provides a method for locating a fault of an LED identification plate, where the LED identification plate includes a plurality of LED light emitting devices, and the method includes: acquiring operation parameter information of the LED identification label; judging whether the LED identification label has a fault according to the operation parameter information of the LED identification label; if so, acquiring a display interface image of the LED identification label; and determining the position of the LED light-emitting device with the fault in the LED identification sign according to the display interface image of the LED identification sign.
In the designed LED identification sign fault positioning method, whether the LED identification sign has a fault or not is judged according to the operation parameter information of the LED identification sign, the display interface image of the LED identification sign is acquired after the fault is determined, and then the position of the LED light-emitting device with the fault is determined according to the display interface image of the LED identification sign, so that the problem that the fault detection cannot be carried out on the conventional LED identification sign, and meanwhile, the fault positioning cannot be carried out by naked eyes when a small-area fault occurs is solved, the operation safety of the LED identification sign is improved, the fault position can be determined in time, and the convenience and the rapidity of the follow-up maintenance of the LED identification sign are ensured.
In an optional implementation manner of the first aspect, the determining, according to the operating parameter information of the LED identification tag, whether the LED identification tag has a fault includes: judging whether the electric energy parameter information of the LED identification label is the same as the electric energy parameter information prestored in a database; and if not, determining that the LED identification sign has a fault.
In an optional implementation manner of the first aspect, the obtaining of the operating parameter information of the LED identification sign includes obtaining electrical energy parameter information of each LED lighting device; the judging whether the LED identification sign has a fault according to the operation parameter information of the LED identification sign comprises the following steps: comparing the electric energy parameter information of each LED light-emitting device with corresponding electric energy parameter information stored in a database, and judging whether the LED light-emitting devices with different electric energy parameter information from the electric energy parameter information stored in the database exist or not; and if so, determining that the LED identification sign has a fault.
In an optional implementation manner of the first aspect, before the obtaining of the operating parameter information of the LED identification sign, the method further includes: acquiring the current ambient temperature of the LED identification label; the acquiring of the operating parameter information of the LED identification sign includes: acquiring a current change curve of the LED identification label at the current ambient temperature; the judging whether the LED identification sign has a fault according to the operation parameter information of the LED identification sign comprises the following steps: judging whether the current change curve of the LED identification label at the current environment temperature is the same as the current change curve at the same environment temperature prestored in a database; and if not, determining that the LED identification sign has a fault.
In an optional implementation manner of the first aspect, the acquiring the current ambient temperature of the LED identification sign includes: acquiring the current ambient temperature of each LED light-emitting device; the obtaining of the current change curve of the LED identification sign at the current ambient temperature includes: acquiring a current change curve of each LED light-emitting device at the current ambient temperature; the judging whether the LED identification sign has a fault according to the operation parameter information of the LED identification sign comprises the following steps: comparing the current change curve of each LED light-emitting device at the current environment temperature with the current change curve of each LED light-emitting device at the same environment temperature prestored in a database, and judging whether the LED light-emitting devices with different current change curves at the current environment temperature and the same environment temperature prestored in the database exist or not; and if so, determining that the LED identification sign has a fault.
In an alternative implementation manner of the first aspect, the determining, according to the display interface image of the LED sign, a location of a failed LED lighting device in the LED sign includes: converting a display interface image of the LED identification sign into a first gray image; acquiring a second gray image of the original image of the LED identification label in a normal display state; and determining the position of the LED light-emitting device with the fault according to the first gray-scale image and the second gray-scale image.
In an alternative embodiment of the first aspect, the determining the location of the failed LED lighting device according to the first gray scale image and the second gray scale image includes: judging whether pixel points at the same positions with different pixel values exist in the first gray level image and the second gray level image or not; and if so, determining the pixel points at the same positions with different pixel values as the positions of the LED light-emitting devices with light-emitting faults.
In a second aspect, an embodiment of the present invention provides an LED identification plate fault locating device, where the LED identification plate includes a plurality of LED light emitting devices, and the device includes: the acquisition module is used for acquiring the operating parameter information of the LED identification label; the judging module is used for judging whether the LED identification label has a fault according to the operation parameter information of the LED identification label; the acquisition module is further used for acquiring a display interface image of the LED identification sign after the LED identification sign is judged to have a fault; and the determining module is used for determining the position of the LED light-emitting device with the fault in the LED identification sign according to the display interface image of the LED identification sign.
In the LED sign board fault locating device of above-mentioned design, whether LED sign board breaks down is judged through the operating parameter information of LED sign board, through the display interface image that obtains LED sign board after confirming breaking down, and then confirm the position of the LED illuminator that breaks down according to the display interface image of LED sign board, the problem that current LED sign board can't carry out fault detection simultaneously when the small size trouble appears and can't carry out fault location by naked eye is solved, improve the security of LED sign board operation and can in time confirm the fault location, the convenience and the rapidity of the follow-up maintenance of LED sign board have been ensured.
In an optional implementation manner of the second aspect, the operating parameter information of the LED identification tag includes electric energy parameter information of the LED identification tag, and the determining module is specifically configured to determine whether the electric energy parameter information of the LED identification tag is the same as electric energy parameter information prestored in a database; and if not, determining that the LED identification sign has a fault.
In an optional implementation manner of the second aspect, the obtaining module is specifically configured to obtain electric energy parameter information of each LED lighting device; the judging module is specifically used for comparing the electric energy parameter information of each LED light-emitting device with the corresponding electric energy parameter information stored in the database and judging whether the LED light-emitting devices with different electric energy parameter information and electric energy parameter information correspondingly stored in the data exist or not; and if so, determining that the LED identification sign has a fault.
In an optional implementation manner of the second aspect, the obtaining module is further configured to obtain a current ambient temperature of the LED identification plate; acquiring a current change curve of the LED identification label at the current environment temperature; the judging module is specifically used for judging whether the current change curve of the LED identification label at the current ambient temperature is the same as the current change curve at the same ambient temperature prestored in the database; and if not, determining that the LED identification sign has a fault.
In an optional implementation manner of the second aspect, the determining module is specifically configured to convert a display interface image of the LED sign into a first grayscale image; acquiring a second gray image of the original image of the LED identification label in a normal display state; and judging the position of the LED light-emitting device with the fault according to the first gray level image and the second gray level image.
In a third aspect, an embodiment of the present invention provides a system for locating a fault of an LED sign, where the system includes a server, a camera, an LED sign including a plurality of LED light-emitting devices, and an intelligent power supply, where the intelligent power supply is electrically connected to the LED sign, and the intelligent power supply and the camera are electrically connected to the server; the intelligent power supply is internally integrated with a data acquisition module which is used for acquiring the operation parameter information of the LED identification label and transmitting the operation parameter information to the server; the server is used for judging whether the LED identification label has a fault according to the operation parameter information of the LED identification label; and if so, controlling the camera to shoot the display interface of the LED identification sign to acquire the display interface image of the LED identification sign, and determining the position of the LED light-emitting device with the fault in the LED identification sign according to the display interface image of the LED identification sign.
In an optional embodiment of the third aspect, the number of the intelligent power supplies is multiple, the number of the intelligent power supplies is the same as the number of the LED lighting devices, and each intelligent power supply is electrically connected with one LED lighting device; the intelligent power supply comprises a server, an intelligent power supply and a data acquisition module, wherein the intelligent power supply is internally integrated with the data acquisition module and is used for acquiring the operation parameter information of the LED light-emitting devices correspondingly connected and sending the operation parameter information of the LED light-emitting devices correspondingly connected to the intelligent power supply to the server; the server is used for judging whether the plurality of LED light-emitting devices have the failed LED light-emitting device or not according to the operation parameter information of each LED light-emitting device; and if so, controlling the camera to shoot the display interface of the LED identification sign to acquire the display interface image of the LED identification sign, and determining the position of the LED light-emitting device with the fault in the LED identification sign according to the display interface image of the LED identification sign.
IN an optional implementation manner of the third aspect, the data acquisition module includes a microcontroller and a current acquisition circuit, the current acquisition circuit includes a current sense amplifier, a first resistor, a second resistor and a first capacitor, an IN + pin of the current sense amplifier is electrically connected to a corresponding LED lighting device, an IN-pin of the current sense amplifier is grounded, a GND pin of the current sense amplifier is grounded, a REF pin of the current sense amplifier is grounded through the first resistor, and an OUT pin of the current sense amplifier is electrically connected to the microcontroller through the second resistor and is grounded through the first capacitor.
In an optional implementation of the third aspect, the system further comprises a temperature sensor disposed within the smart power supply, the temperature sensor being electrically connected to the server; the temperature sensor is used for measuring the current temperature of the corresponding intelligent power supply and transmitting the measured current temperature to the server; and the server is used for judging whether the intelligent power supply with the current temperature exceeding the safety value exists, and if so, sending prompt information.
In a fourth aspect, an embodiment provides an electronic device, including a memory and a processor, where the memory stores a computer program, and the processor executes the computer program to perform the method in the first aspect or any optional implementation manner of the first aspect.
In a fifth aspect, embodiments provide a non-transitory readable storage medium on which a computer program is stored, the computer program, when executed by a processor, performing the method of the first aspect, any optional implementation manner of the first aspect.
In a sixth aspect, embodiments provide a computer program product, which when run on a computer, causes the computer to execute the method of the first aspect, or any optional implementation manner of the first aspect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a first block diagram of an LED sign failure location system according to an embodiment of the present disclosure;
FIG. 2 is a second block diagram of an LED sign failure location system according to an embodiment of the present disclosure;
fig. 3 is a circuit diagram of a data acquisition module according to an embodiment of the present application;
FIG. 4 is a first flowchart of a method for locating a fault in an LED sign provided by an embodiment of the present application;
FIG. 5 is a second flowchart of a method for locating a fault in an LED sign provided by an embodiment of the present application;
fig. 6 is a third flowchart of a method for locating a fault of an LED identification plate according to an embodiment of the present disclosure;
FIG. 7 is a fourth flowchart of a method for locating a fault in an LED sign provided by an embodiment of the present application;
FIG. 8 is a fifth flowchart of a method for locating a fault in an LED sign provided in an embodiment of the present application;
fig. 9 is a sixth flowchart of a method for locating a failure in an LED sign provided in an embodiment of the present application;
FIG. 10 is a seventh flowchart of a method for locating a fault in an LED sign provided by an embodiment of the present application;
fig. 11 is an eighth flowchart of a method for locating a failure in an LED sign provided in an embodiment of the present application;
FIG. 12 is a block diagram of an LED sign failure location device provided in accordance with an embodiment of the present application;
fig. 13 is a block diagram of an electronic device according to an embodiment of the present application.
Icon: 10-a server; 20-a camera; 30-LED identification signs; 40-a smart power supply; 50-a temperature sensor; 60-LED lighting devices; 401-a microcontroller; 402-a current sense amplifier; r5 — first resistance; r6 — second resistance; c1 — first capacitance; 200-an obtaining module; 202-a judging module; 204-a determination module; 3-an electronic device; 301-a processor; 302-a memory; 303-communication bus.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
First embodiment
As shown in fig. 1, the embodiment of the present application provides an LED sign failure location system, which includes a server 10, a camera 20, an LED sign 30, and an intelligent power supply 40, wherein the intelligent power supply 40 is electrically connected to the LED sign 30, and the intelligent power supply 40 and the camera 20 are electrically connected to the server 10. The intelligent power supply 40 is integrated with a data acquisition module, the data acquisition module can acquire the operating parameter information of the LED identification label 30 connected with the data acquisition module in real time, and can transmit/send the operating parameter information of the LED identification label 30 to the server 10 in a wired or wireless manner, after the server 10 detects that the operating parameter information of the LED identification label 30 is abnormal, the server controls the camera 20 to capture to obtain the display interface image of the LED identification label 30, and the display interface image is processed to realize the fault location of the LED identification label 30.
In an optional implementation manner of this embodiment, as shown in fig. 2, the LED identification plate 30 may include a plurality of LED light emitting devices 60, the number of the intelligent power supplies 40 is also multiple and is the same as that of the LED light emitting devices 60, each intelligent power supply 40 is connected to one LED light emitting device 60, each intelligent power supply 40 is connected to the server 10, further, operation parameter information corresponding to the LED light emitting device 60 is acquired and transmitted to the server 10, after the server 10 detects an abnormal LED light emitting device 60, the server controls the camera to capture a display interface image of the LED identification plate 30, and the display interface image is processed to determine the position of the failed LED light emitting device 60. The LED identification sign can be divided into LED identification lighting, LED lamp box lighting and LED decorative lighting; the LED identification illumination can be specifically LED exposed characters, LED plane characters and the like; the LED lamp box illumination can be specifically an LED lamp box side light-emitting source, an LED lamp box back light-emitting source and the like; the LED decorative lighting can be LED decorative straight strips, down lamps, panel lamps, T5 lamp tubes and the like.
In an optional implementation manner of this embodiment, as shown in fig. 2, the system may further include a temperature sensor 50, and since the smart power source generates more heat than the power source, the temperature sensor 50 may be disposed on the smart power source 40 and connected to the server 10 at the same time, so as to transmit the temperature of the smart power source 40 to the server 10 for monitoring whether the temperature of the smart power source 40 is abnormal; the temperature sensor 50 may also monitor whether the temperature of the main line is abnormal, the ambient temperature information of the LED identification label 30 or the LED lighting device 60, and the like.
IN an alternative embodiment of this embodiment, as shown IN fig. 3, the data acquisition module integrated with the smart power source 40 may specifically include a microcontroller 401 and a current acquisition circuit, the current acquisition circuit includes a current sense amplifier 402, a first resistor R5, a second resistor R6, and a first capacitor C1, the current sense amplifier 402 may be an INA199 series current sense amplifier, an IN + pin of the current sense amplifier 402 is electrically connected to the corresponding LED lighting device 60, an IN-pin of the current sense amplifier 402 is grounded, a GND pin of the current sense amplifier 402 is grounded, a REF pin of the current sense amplifier 402 is grounded through the first resistor R5, and an OUT pin of the current sense amplifier 402 is electrically connected to the microcontroller 401 through the second resistor R6 and is grounded through the first capacitor C1.
Second embodiment
The present embodiment provides a method for locating a fault of an LED identification sign, which is applied to the server 10 in the first embodiment to locate the fault of the LED identification sign, as shown in fig. 4, the method may specifically include the following steps:
step S200: and acquiring the operating parameter information of the LED identification label.
Step S202: and judging whether the LED identification sign has a fault according to the operation parameter information of the LED identification sign, and if so, turning to the step S204.
Step S204: and acquiring a display interface image of the LED identification label.
Step S206: and determining the position of the LED light-emitting device with the fault in the LED identification sign according to the display interface image of the LED identification sign.
In step S200, the operating parameter information of the LED identification plate represents current operating parameter information of the LED identification plate, which may include current power parameter information of the LED identification plate, such as current, voltage, and resistive impedance in a load circuit, and may also be information such as operating temperature of the LED identification plate; the data acquisition module in the available intelligent power supply in the first embodiment may acquire the operating parameter information of the LED identification sign and then send it to the server, and the server may perform step S202 after acquiring the operating parameter information of the LED identification sign in step S200.
In step S202, the server may determine whether the LED identification tag has a fault according to the operation parameter information of the LED identification tag obtained in step S200, for example, when the operation parameter information is the aforementioned power parameter information, it may be determined whether the LED identification tag has a fault according to the power parameter information of the LED identification tag, for example, whether the LED identification tag has a short circuit or not according to the voltage parameter; when the operation parameter information is the operation temperature, whether the temperature exceeds the standard or not can be judged to determine whether the LED identification label has a short circuit or not. If the server judges that the LED identification label has no fault, the LED identification label continues to operate according to the current operation mode; if the server determines that the LED sign has a failure, step S204 is performed.
In step S204, the server controls the camera described in the first embodiment to capture a display interface of the LED sign, so as to obtain a display interface image of the LED sign, where the display interface image of the LED sign is an image of a currently displayed pattern of the LED sign, for example, a text, a LOGO, and the like displayed by a current billboard. After the server obtains the display interface image of the LED sign, step S206 is executed.
In step S206, the server further determines the location of the failed LED lighting device in the LED sign according to the display interface image of the LED sign obtained in step S204. Specifically, the server can compare the currently captured image of the display interface with the pre-stored normal image of the LED identification label, and further determine the position of the failed LED light-emitting device; the server can also input the images of the display interface obtained by snapshot into a neural network model which is trained in advance to determine the position of the LED light-emitting device with the fault.
In the designed LED identification sign fault positioning method, whether the LED identification sign has a fault or not is judged according to the operation parameter information of the LED identification sign, the display interface image of the LED identification sign is acquired after the fault is determined, and then the position of the LED light-emitting device with the fault is determined according to the display interface image of the LED identification sign, so that the problem that the fault detection cannot be carried out on the conventional LED identification sign, and meanwhile, the fault positioning cannot be carried out by naked eyes when a small-area fault occurs is solved, the operation safety of the LED identification sign is improved, the fault position can be determined in time, and the convenience and the rapidity of the follow-up maintenance of the LED identification sign are ensured.
In an optional implementation manner of this embodiment, it has been described above that the operation parameter information of the LED identification plate includes electric energy parameter information of the LED identification plate, and on this basis, step S202 determines whether the LED identification plate has a fault according to the operation parameter information of the LED identification plate, as shown in fig. 5, specifically, the following steps may be performed:
step S2020: and judging whether the electric energy parameter information of the LED identification label is the same as the electric energy parameter information prestored in the database, and if the electric energy parameter information of the LED identification label is different from the electric energy parameter information prestored in the database, turning to the step S2021.
Step S2021: and determining that the LED identification label has a fault.
In step S2020, the database of the server stores the electric energy parameter information of the LED identification sign during normal operation in advance, and after the server acquires the current electric energy parameter information of the LED identification sign in step S200, the server compares the current electric energy parameter information of the LED identification sign with the stored electric energy parameter information to determine whether the current electric energy parameter information of the LED identification sign is the same as the stored electric energy parameter information, and if the current electric energy parameter information of the LED identification sign is not the same as the stored electric energy parameter information, the step S2021 is executed to determine that the LED identification sign has a fault.
In an optional implementation manner of this embodiment, since the LED identification plate includes a plurality of LED light emitting devices, as shown in fig. 6, step S200 may specifically be:
step S2000: and acquiring the electric energy parameter information of each LED light-emitting device.
On this basis, step S202 determines whether the LED identification tag has a fault according to the operating parameter information of the LED identification tag, which may specifically be:
step S2022: comparing the electric energy parameter information of each LED light-emitting device with the corresponding electric energy parameter information stored in the database, judging whether the LED light-emitting devices with different electric energy parameter information from the electric energy parameter information stored in the database exist, and if so, turning to the step S2023.
Step S2023: and determining that the LED identification label has a fault.
In step S2000, it has been described in the first embodiment that a plurality of intelligent power supplies are provided, and each intelligent power supply can collect the electric energy parameter information of the LED lighting device connected correspondingly and transmit/send the electric energy parameter information to the server, so that the server can obtain the electric energy parameter information of each LED lighting device, and execute step S2021; it should be noted that, because the display requirements of different display portions of the display interface of the LED identification plate are different, such as brightness, color, model, and the like, the operating power parameter information of different LED lighting devices is different, for example, the voltage or current of the LED lighting devices is different when the brightness is different, and therefore, the power parameter information of each LED lighting device needs to be obtained; in addition, in order for the server to identify each LED lighting device, each smart power source collecting the operating parameters of the LED lighting device may be numbered differently, and thus the LED lighting device collected by each smart power source may be identified.
In step S2022, the database stores the electrical energy parameter information of each LED lighting device during normal operation, and then compares the obtained current electrical energy parameter information of the LED lighting device with the stored electrical energy parameter information during normal operation, and determines whether there is an LED lighting device whose electrical energy parameter information is different from the electrical energy parameter information stored in the data, if so, it indicates that the LED lighting device may malfunction, and then step S2023 is executed to determine that the LED identification sign malfunctions.
In an optional implementation manner of this embodiment, before the obtaining of the operating parameter information of the LED identification plate in step S200, as shown in fig. 7, the method may further include:
step S190: and acquiring the current ambient temperature of the LED identification label.
On this basis, the operation parameter information of the LED identification plate obtained in step S200 may specifically be:
step S2001: and acquiring a current change curve of the LED identification label at the current ambient temperature.
Step S202, determining whether the LED identification sign has a fault according to the operating parameter information of the LED identification sign specifically may be: step S2024: and judging whether the current change curve of the LED identification label at the current environment temperature is the same as the current change curve of the LED identification label at the same environment temperature prestored in the database, and if the current change curve of the LED identification label at the current environment temperature is different from the current change curve of the LED identification label at the same environment temperature prestored in the database, turning to the step S2025.
Step S2025: and determining that the LED identification label has a fault.
In step S190, it has been described in the first embodiment that the current ambient temperature of the LED identification plate can be obtained by the temperature sensor and sent to the server, and the server can obtain the current ambient temperature of the LED identification plate, and then step S2001 is performed.
In step S2001, the operating parameters of the LED identification sign are different, for example, the current magnitude is different, and the generated temperature is different, so that the current variation curve of the LED identification sign at the current ambient temperature can be obtained, step S2024 is further performed, it is determined whether the current variation curve of the LED identification sign at the current ambient temperature is the same as the current variation curve of the LED identification sign at the same ambient temperature prestored in the database, if not, it is determined that the LED identification sign may have a fault, and step S2025 is further performed to determine that the LED identification sign has a fault.
In an optional implementation manner of this embodiment, as shown in fig. 8, the step S190 of obtaining the current ambient temperature of the LED identification plate may specifically be: step S1900: and acquiring the current ambient temperature of each LED light-emitting device.
On this basis, step S2001 acquires a current variation curve of the LED identification tag at the current ambient temperature, which may specifically be: step S20010: and acquiring a current change curve of each LED light-emitting device at the current ambient temperature.
Step S2024, determining whether the current variation curve of the LED identification tag at the current ambient temperature is the same as the current variation curve at the same ambient temperature pre-stored in the database may specifically be:
step S20240: comparing the current variation curve of each LED lighting device at the current ambient temperature with the current variation curve of each LED lighting device at the same ambient temperature pre-stored in the database, determining whether there is an LED lighting device having a current variation curve at the current ambient temperature different from the current variation curve of each LED lighting device at the same ambient temperature pre-stored in the database, if yes, going to step S20241.
Step S20241: and determining that the LED identification label has a fault.
In step S1900, it has been described that, since the display requirements of different display portions of the display interface of the LED sign are different, such as brightness, color, and model, and the electrical operating parameters of the LED lighting devices are different, and different thermal energies are emitted, so that the ambient temperatures of different LED lighting devices may be different, it is necessary to collect the current ambient temperature of each LED lighting device and execute step S20010 to obtain the current variation curve of each LED lighting device at the current ambient temperature, and execute step S20240 to compare the current variation curve of each LED lighting device at the current ambient temperature with the current variation curve of each LED lighting device at the same ambient temperature pre-stored in the database, and determine whether there is an LED lighting device having a current variation curve at the current ambient temperature different from the current variation curve at the same ambient temperature pre-stored in the database, if yes, it indicates that there is a failed LED lighting device, and step S20241 is performed to determine that the LED sign has failed.
In an optional implementation manner of this embodiment, step S206 determines, according to the display interface image of the LED sign, a location of an LED lighting device having a fault in the LED sign, where it has been described above that the fault location can be determined by comparing a snapshot image with a pre-stored image, and can also be determined in a form of a neural network model, and this embodiment is described in a manner of image comparison, as shown in fig. 9, and specifically includes the following steps:
step S2060: and converting the display interface image of the LED identification label into a first gray image.
Step S2061: and acquiring a second gray image of the original image of the LED identification label in the normal display state.
Step S2062: and determining the position of the LED light-emitting device with the fault according to the first gray-scale image and the second gray-scale image.
In step S2060, after the server acquires the display interface image of the LED identification sign according to step S204, the server performs gray scale conversion on the acquired display interface image, and further converts the acquired display interface image into a first gray scale image; specifically, the display interface image may be subjected to grayscale conversion by software opencv, and then step S2061 is performed.
In step S2061, a second gray scale image of the original image of the display interface of the LED identification plate in the normal display state, i.e., in the complete display state, is pre-stored in the database. Specifically, the method includes the steps of capturing a display interface in a normal state of the LED identification plate, performing gray scale conversion on an image obtained by capturing to generate a second gray scale image, storing the second gray scale image in a database of the server, calling the server when the server executes step S2061, and determining the position of the failed LED light-emitting device according to the first gray scale image and the second gray scale image in step S2062. As shown in fig. 10, step S2062 may specifically include the following steps:
step S20621: and judging whether pixel points at the same positions with different pixel values exist in the first gray level image and the second gray level image, if so, turning to step S20622.
Step S20622: and determining pixel points at the same positions with different pixel values as the positions of the LED light-emitting devices with light-emitting faults.
In step S20621, the server compares the pixel values of the pixel points at the same positions in the first gray scale image and the second gray scale image one by one, and determines whether the pixel values of the pixel points at the same positions are equal, if not, it indicates that the LED lighting device at the pixel position is likely to be a failed LED lighting device, and thus step S20622 may be executed to determine the pixel points at the same positions with different pixel values as the positions of the LED lighting devices with lighting failures.
In an alternative implementation manner of this embodiment, when the step S206 determines that the fault location is in the form of the aforementioned neural network model, as shown in fig. 11, it may specifically include the following steps:
step S2063: and inputting the display interface image of the LED identification sign into a preset fault position determination model, and obtaining the fault position output by the preset fault position determination model.
Before step S2063, the preset neural network model may be trained to obtain the preset fault location determining module, and the specific training process may be obtained after the preset neural network model is trained according to multiple types of display interface images. Specifically, the multiple types of display interface images can be multiple display interfaces under normal fault-free conditions, an image of a fault of each display part of the display interface of the LED identification sign, an image of a fault of multiple display parts of the display interface of the LED identification sign, an image of a fire of the display interface of the LED identification sign and the like, the multiple types of display interface images are input into a preset neural network model, a feature vector corresponding to each type is respectively extracted, training loss of the neural network model is calculated through a comparison loss function based on the feature vector corresponding to each type, and then according to each parameter of a back propagation algorithm and the training loss iterative neural network model, after the iteration times are finished or each parameter of the model meets requirements, a trained fault position determination model can be obtained.
In step S2063, the currently captured display interface image of the LED identification sign is input into the trained fault location determination model, and then the feature vector of the currently captured display interface image is extracted through the preset fault location determination model, and an image of the type most similar to the feature vector of the currently captured display interface image is found out, and then the fault location of the currently captured display interface image is determined according to the image of the most similar type.
Third embodiment
Fig. 12 shows a schematic block diagram of the LED sign failure location device provided by the present application, the LED sign includes a plurality of LED lighting devices, it should be understood that the device corresponds to the method embodiments executed in fig. 4 to 11, the steps involved in the method executed by the server in the first embodiment can be executed, the specific functions of the device can be referred to the description above, and the detailed description is omitted here to avoid repetition. The device includes at least one software function that can be stored in memory in the form of software or firmware (firmware) or solidified in the Operating System (OS) of the device. Specifically, the apparatus includes: an obtaining module 200, configured to obtain operating parameter information of the LED identification tag; the judging module 202 is used for judging whether the LED identification label has a fault according to the operation parameter information of the LED identification label; the obtaining module 200 is further configured to obtain a display interface image of the LED identification plate after it is determined that the LED identification plate has a fault; and the determining module 204 is used for determining the position of the failed LED light-emitting device in the LED sign according to the display interface image of the LED sign.
In the LED sign board fault locating device of above-mentioned design, whether LED sign board breaks down is judged through the operating parameter information of LED sign board, through the display interface image that obtains LED sign board after confirming breaking down, and then confirm the position of the LED illuminator that breaks down according to the display interface image of LED sign board, the problem that current LED sign board can't carry out fault detection simultaneously when the small size trouble appears and can't carry out fault location by naked eye is solved, improve the security of LED sign board operation and can in time confirm the fault location, the convenience and the rapidity of the follow-up maintenance of LED sign board have been ensured.
In an optional implementation manner of this embodiment, the operation parameter information of the LED identification tag includes electric energy parameter information of the LED identification tag, and the determining module 202 is specifically configured to determine whether the electric energy parameter information of the LED identification tag is the same as electric energy parameter information prestored in the database; if not, determining that the LED identification sign has a fault.
In an optional implementation manner of this embodiment, the obtaining module 200 is specifically configured to obtain electric energy parameter information of each LED lighting device; a judging module 202, specifically configured to compare the electrical energy parameter information of each LED light-emitting device with corresponding electrical energy parameter information stored in a database, and judge whether there is an LED light-emitting device whose electrical energy parameter information is different from the electrical energy parameter information stored in the corresponding data; if so, determining that the LED identification sign has a fault.
In an optional implementation manner of this embodiment, the obtaining module 200 is further configured to obtain a current ambient temperature of the LED identification tag; acquiring a current change curve of the LED identification label at the current ambient temperature; the judging module 202 is specifically configured to judge whether a current change curve of the LED identification tag at the current ambient temperature is the same as a current change curve of the LED identification tag at the same ambient temperature that is prestored in the database; if not, determining that the LED identification sign has a fault.
In an optional implementation manner of this embodiment, the determining module 204 is specifically configured to convert a display interface image of the LED sign into a first grayscale image; acquiring a second gray image of the original image of the LED identification label in a normal display state; and judging the position of the LED light-emitting device with the fault according to the first gray scale image and the second gray scale image.
Third embodiment
As shown in fig. 13, the present application provides an electronic device 3 including: a processor 301 and a memory 302, the processor 301 and the memory 302 being interconnected and communicating with each other via a communication bus 303 and/or other form of connection mechanism (not shown), the memory 302 storing a computer program executable by the processor 301, the processor 301 executing the computer program when the computing device is running to perform the method of the first embodiment, any alternative implementation of the first embodiment, such as steps S200 to S206: acquiring operation parameter information of the LED identification label; judging whether the LED identification label has a fault according to the operation parameter information of the LED identification label; if yes, acquiring a display interface image of the LED identification label; and determining the position of the LED light-emitting device with the fault in the LED identification sign according to the display interface image of the LED identification sign.
The present application provides a storage medium having a computer program stored thereon, where the computer program is executed by a processor to perform the method of the first embodiment or any alternative implementation manner of the first embodiment.
The storage medium may be implemented by any type of volatile or nonvolatile storage device or combination thereof, such as a Static Random Access Memory (SRAM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), an Erasable Programmable Read-Only Memory (EPROM), a Programmable Read-Only Memory (PROM), a Read-Only Memory (ROM), a magnetic Memory, a flash Memory, a magnetic disk, or an optical disk.
The present application provides a computer program product which, when run on a computer, causes the computer to perform the method of the first embodiment, any of its alternative implementations.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, 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 units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
It should be noted that the functions, if implemented in the form of software functional modules and sold or used as independent products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (12)

1. A method of LED sign failure location, wherein the LED sign comprises a plurality of LED lighting devices, the method comprising:
acquiring operation parameter information of the LED identification label;
judging whether the LED identification label has a fault according to the operation parameter information of the LED identification label;
if so, acquiring a display interface image of the LED identification label;
and determining the position of the LED light-emitting device with the fault in the LED identification sign according to the display interface image of the LED identification sign.
2. The method of claim 1, wherein the operating parameter information of the LED sign comprises power parameter information of the LED sign, and wherein determining whether the LED sign is malfunctioning based on the operating parameter information of the LED sign comprises:
judging whether the electric energy parameter information of the LED identification label is the same as the electric energy parameter information prestored in a database;
and if not, determining that the LED identification sign has a fault.
3. The method of claim 1, wherein the obtaining operational parameter information for the LED identification tag comprises:
acquiring electric energy parameter information of each LED light-emitting device;
the judging whether the LED identification sign has a fault according to the operation parameter information of the LED identification sign comprises the following steps:
comparing the electric energy parameter information of each LED light-emitting device with corresponding electric energy parameter information stored in a database, and judging whether the LED light-emitting devices with different electric energy parameter information from the electric energy parameter information stored in the database exist or not; and if so, determining that the LED identification sign has a fault.
4. The method of claim 1, wherein prior to said obtaining operating parameter information for said LED identification tag, said method further comprises:
acquiring the current ambient temperature of the LED identification label;
the acquiring of the operating parameter information of the LED identification sign includes:
acquiring a current change curve of the LED identification label at the current ambient temperature;
the judging whether the LED identification sign has a fault according to the operation parameter information of the LED identification sign comprises the following steps:
judging whether the current change curve of the LED identification label at the current environment temperature is the same as the current change curve at the same environment temperature prestored in a database;
and if not, determining that the LED identification sign has a fault.
5. The method of claim 4, wherein said obtaining a current ambient temperature of said LED sign comprises: acquiring the current ambient temperature of each LED light-emitting device;
the obtaining of the current change curve of the LED identification sign at the current ambient temperature includes: acquiring a current change curve of each LED light-emitting device at the current ambient temperature;
the judging whether the LED identification sign has a fault according to the operation parameter information of the LED identification sign comprises the following steps:
comparing the current change curve of each LED light-emitting device at the current environment temperature with the current change curve of each LED light-emitting device at the same environment temperature prestored in a database, and judging whether the LED light-emitting devices with different current change curves at the current environment temperature and the same environment temperature prestored in the database exist or not; and if so, determining that the LED identification sign has a fault.
6. The method of claim 1, wherein determining the location of the failed LED lighting device in the LED sign from the display interface image of the LED sign comprises:
converting a display interface image of the LED identification sign into a first gray image;
acquiring a second gray image of the original image of the LED identification label in a normal display state;
and determining the position of the LED light-emitting device with the fault according to the first gray-scale image and the second gray-scale image.
7. The method of claim 6, wherein determining the location of the failed LED lighting device from the first grayscale image and the second grayscale image comprises:
judging whether pixel points at the same positions with different pixel values exist in the first gray level image and the second gray level image or not;
and if so, determining the pixel points at the same positions with different pixel values as the positions of the LED light-emitting devices with light-emitting faults.
8. An LED identification sign fault location device, wherein said LED identification sign comprises a plurality of LED light emitting devices, said device comprising:
the acquisition module is used for acquiring the operating parameter information of the LED identification label;
the judging module is used for judging whether the LED identification label has a fault according to the operation parameter information of the LED identification label;
the acquisition module is further used for acquiring a display interface image of the LED identification sign after the LED identification sign is judged to have a fault;
and the determining module is used for determining the position of the LED light-emitting device with the fault in the LED identification sign according to the display interface image of the LED identification sign.
9. An LED identification label fault positioning system is characterized by comprising a server, a camera, an LED identification label comprising a plurality of LED light-emitting devices and an intelligent power supply, wherein the intelligent power supply is electrically connected with the LED identification label, and the intelligent power supply and the camera are electrically connected with the server;
the intelligent power supply is internally integrated with a data acquisition module which is used for acquiring the operation parameter information of the LED identification label and transmitting the operation parameter information to the server;
the server is used for judging whether the LED identification label has a fault according to the operation parameter information of the LED identification label; and if so, controlling the camera to shoot the display interface of the LED identification sign to acquire the display interface image of the LED identification sign, and determining the position of the LED light-emitting device with the fault in the LED identification sign according to the display interface image of the LED identification sign.
10. The system according to claim 9, wherein the number of the intelligent power sources is plural, the number of the intelligent power sources is the same as the number of the LED light-emitting devices, and each intelligent power source is electrically connected with one LED light-emitting device;
the intelligent power supply comprises a server, an intelligent power supply and a data acquisition module, wherein the intelligent power supply is internally integrated with the data acquisition module and is used for acquiring the operation parameter information of the LED light-emitting devices correspondingly connected and sending the operation parameter information of the LED light-emitting devices correspondingly connected to the intelligent power supply to the server;
the server is used for judging whether the plurality of LED light-emitting devices have the failed LED light-emitting device or not according to the operation parameter information of each LED light-emitting device; and if so, controlling the camera to shoot the display interface of the LED identification sign to acquire the display interface image of the LED identification sign, and determining the position of the LED light-emitting device with the fault in the LED identification sign according to the display interface image of the LED identification sign.
11. The system of claim 9, wherein the data acquisition module comprises a microcontroller and a current acquisition circuit, the current acquisition circuit comprising a current sense amplifier, a first resistor, a second resistor, and a first capacitor, the IN + pin of the current sense amplifier being electrically connected to the corresponding LED light emitting device, the IN-pin of the current sense amplifier being connected to ground, the GND pin of the current sense amplifier being connected to ground, the REF pin of the current sense amplifier being connected to ground through the first resistor, the OUT pin of the current sense amplifier being electrically connected to the microcontroller through the second resistor and to ground through the first capacitor.
12. The system of claim 9, further comprising a temperature sensor disposed within the smart power supply, the temperature sensor being electrically connected to the server;
the temperature sensor is used for measuring the current temperature of the corresponding intelligent power supply and transmitting the measured current temperature to the server;
and the server is used for judging whether the intelligent power supply with the current temperature exceeding the safety value exists, and if so, sending prompt information.
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