CN111722074B - LED identification label fault positioning method, device and system - Google Patents
LED identification label fault positioning method, device and system Download PDFInfo
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- CN111722074B CN111722074B CN202010493194.9A CN202010493194A CN111722074B CN 111722074 B CN111722074 B CN 111722074B CN 202010493194 A CN202010493194 A CN 202010493194A CN 111722074 B CN111722074 B CN 111722074B
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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
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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
- G01R31/50—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
Abstract
The application provides a method, a device and a system for locating faults of an LED identification label, wherein the method comprises the following steps: acquiring operation parameter information of the LED identification label; judging whether the LED identification label has faults or not 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 luminous device with faults in the LED identification tag according to the display interface image of the LED identification tag.
Description
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 label.
Background
The LED (Light Emitting Diode, LED) identification label comprises shop marks, advertising lamp boxes and the like, the LED identification label is placed at a high place in order to be easily seen by a user and further advertising is carried out, but the operation of the existing LED identification label is not protected with good safety, namely fault detection cannot be carried out, and meanwhile, the LED identification label is placed at the high place in general, and when a small-area fault occurs, fault positioning cannot be carried out by naked eyes.
Disclosure of Invention
An object of the embodiment of the application is to provide a fault positioning method, device and system for an LED identification label, which are used for solving the problem that the existing LED identification label cannot perform fault detection and cannot perform fault positioning by naked eyes when a small-area fault occurs.
In a first aspect, an embodiment of the present invention provides a method for positioning a fault of an LED identification tag, where the LED identification tag includes a plurality of LED light emitting devices, and the method includes: acquiring the operation parameter information of the LED identification label; judging whether the LED identification label has faults or not 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 luminous device with faults in the LED identification tag according to the display interface image of the LED identification tag.
In the LED identification label fault positioning method, whether the LED identification label has faults or not is judged through the operation parameter information of the LED identification label, after the faults are determined, the display interface image of the LED identification label is obtained, and then the position of the LED light-emitting device with the faults is determined according to the display interface image of the LED identification label, so that the problem that the existing LED identification label cannot perform fault detection and cannot perform fault positioning by naked eyes when small-area faults occur is solved, the operation safety of the LED identification label is improved, the fault position can be timely determined, and the convenience and rapidity of subsequent maintenance of the LED identification label are ensured.
In an optional implementation manner of the first aspect, the operation parameter information of the LED identification tag includes electrical energy parameter information of the LED identification tag, and the determining whether the LED identification tag has a fault according to the operation parameter information of the LED identification tag includes: judging whether the electric energy parameter information of the LED identification label is the same as the electric energy parameter information pre-stored in a database; if not, determining that the LED identification label fails.
In an optional implementation manner of the first aspect, the acquiring operation parameter information of the LED identification tag includes acquiring electrical energy parameter information of each LED lighting device; judging whether the LED identification label has faults according to the operation parameter information of the LED identification label comprises the following steps: 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 device with the electric energy parameter information different from the electric energy parameter information stored in the data is provided; if yes, determining that the LED identification label fails.
In an optional implementation manner of the first aspect, before the acquiring the operation parameter information of the LED identification tag, the method further includes: acquiring the current ambient temperature of the LED identification tag; the obtaining the operation parameter information of the LED identification tag includes: acquiring a current change curve of the LED identification tag at the current ambient temperature; judging whether the LED identification label has faults according to the operation parameter information of the LED identification label comprises the following steps: judging whether the current change curve of the LED identification label at the current ambient temperature is the same as the current change curve of the LED identification label at the same ambient temperature pre-stored in a database; if not, determining that the LED identification label fails.
In an optional implementation manner of the first aspect, the acquiring the current ambient temperature of the LED identification tag includes: acquiring the current ambient temperature of each LED light-emitting device; the obtaining the current change curve of the LED identification tag at the current ambient temperature includes: acquiring a current change curve of each LED light-emitting device at the current ambient temperature; judging whether the LED identification label has faults according to the operation parameter information of the LED identification label comprises the following steps: comparing the current change curve of each LED light-emitting device at the current ambient temperature with the current change curve of each LED light-emitting device at the same ambient temperature pre-stored in the database, and judging whether the LED light-emitting device has different current change curves at the current ambient temperature and the same ambient temperature pre-stored in the database; if yes, determining that the LED identification label fails.
In an optional implementation manner of the first aspect, the determining, according to a display interface image of the LED identification tag, a location of the LED lighting device that is malfunctioning in the LED identification tag includes: converting the display interface image of the LED identification label into a first gray image; acquiring a second gray level image of an original image of the LED identification tag in a normal display state; and determining the position of the LED light emitting device with faults according to the first gray level image and the second gray level image.
In an optional implementation manner of the first aspect, the determining a 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 with different pixel values and at the same position exist in the first gray level image and the second gray level image; if yes, the pixel points with the same positions and different pixel values are determined to be the positions of the LED light emitting devices with the light emitting faults.
In a second aspect, an embodiment of the present invention provides an LED identification tag fault locating device, where the LED identification tag includes a plurality of LED light emitting devices, and the device includes: the acquisition module is used for acquiring the operation parameter information of the LED identification tag; the judging module is used for judging whether the LED identification label has faults or not 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 label after judging that the LED identification label fails; and the determining module is used for determining the position of the LED luminous device with the fault in the LED identification tag according to the display interface image of the LED identification tag.
In the LED identification label fault positioning device, whether the LED identification label breaks down or not is judged through the operation parameter information of the LED identification label, after the occurrence of the fault is determined, the display interface image of the LED identification label is obtained, and then the position of the LED light-emitting device which breaks down is determined according to the display interface image of the LED identification label, so that the problem that the existing LED identification label cannot perform fault detection and cannot perform fault positioning by naked eyes when a small-area fault occurs is solved, the operation safety of the LED identification label is improved, the fault position can be timely determined, and the convenience and rapidity of the subsequent maintenance of the LED identification label are ensured.
In an optional implementation manner of the second aspect, the operation parameter information of the LED identification tag includes electrical energy parameter information of the LED identification tag, and the judging module is specifically configured to judge whether the electrical energy parameter information of the LED identification tag is the same as electrical energy parameter information pre-stored in a database; if not, determining that the LED identification label fails.
In an optional implementation manner of the second aspect, the acquiring module is specifically configured to acquire electrical energy parameter information of each LED lighting device; the judging module is specifically configured to compare the electrical energy parameter information of each LED lighting device with the electrical energy parameter information corresponding to the electrical energy parameter information stored in the database, and judge whether the LED lighting device has electrical energy parameter information different from the electrical energy parameter information corresponding to the electrical energy parameter information stored in the data; if yes, determining that the LED identification label fails.
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 tag; the current change curve of the LED identification label at the current ambient temperature is obtained; the judging module 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 pre-stored in a database; if not, determining that the LED identification label fails.
In an optional implementation manner of the second aspect, the determining module is specifically configured to convert a display interface image of the LED identification tag into a first gray image; acquiring a second gray level image of an original image of the LED identification tag in a normal display state; and judging the position of the LED light-emitting device with faults 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 fault location system for an LED identification tag, where the system includes a server, a camera, an LED identification tag including a plurality of LED light emitting devices, and an intelligent power supply, where the intelligent power supply is electrically connected to the LED identification tag, and where 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 faults or not according to the operation parameter information of the LED identification label; if yes, the camera is controlled to shoot the display interface of the LED identification label, a display interface image of the LED identification label is obtained, and the position of the LED light-emitting device with faults in the LED identification label is determined according to the display interface image of the LED identification label.
In an optional implementation manner of the third aspect, the number of the intelligent power supplies is a plurality, 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 an intelligent power supply, an intelligent power supply management module and a data acquisition module, wherein the intelligent power supply management module is used for acquiring operation parameter information of a corresponding connected LED light-emitting device and transmitting the operation parameter information of the corresponding connected LED light-emitting device to the server; the server is used for judging whether the LED light emitting devices with faults exist in the plurality of LED light emitting devices according to the operation parameter information of each LED light emitting device; if yes, the camera is controlled to shoot the display interface of the LED identification label, a display interface image of the LED identification label is obtained, and the position of the LED light-emitting device with faults in the LED identification label is determined according to the display interface image of the LED identification label.
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 with 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 with the microcontroller through the second resistor and grounded through the first capacitor.
In an optional implementation manner of the third aspect, the system further includes a temperature sensor, the temperature sensor is disposed in the intelligent power supply, and the temperature sensor is electrically connected to the server; the temperature sensor is used for measuring the current temperature of the corresponding intelligent power supply and transmitting the current temperature obtained by measurement to the server; and the server is used for judging whether the intelligent power supply with the current temperature exceeding the safety value exists or not, and if yes, prompting information is sent out.
In a fourth aspect, an embodiment provides an electronic device comprising a memory storing a computer program and a processor that when executing the computer program performs the method of the first aspect, any optional implementation of the first aspect.
In a fifth aspect, embodiments provide a non-transitory readable storage medium having stored thereon a computer program which, when executed by a processor, performs the method of the first aspect, any optional implementation of the first aspect.
In a sixth aspect, embodiments provide a computer program product which, when run on a computer, causes the computer to perform the method of any of the alternative implementations 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 needed 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 should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a first structural diagram of an LED identification sign fault locating system provided in an embodiment of the present application;
fig. 2 is a second structural diagram of the LED identification tag fault locating system provided in the embodiment of the present application;
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 faults of an LED identification tag according to an embodiment of the present application;
FIG. 5 is a second flowchart of a method for locating faults of an LED identification tag according to an embodiment of the present application;
FIG. 6 is a third flowchart of a method for locating faults of an LED identification tag according to an embodiment of the present application;
fig. 7 is a fourth flowchart of a fault locating method for an LED identification tag according to an embodiment of the present application;
fig. 8 is a fifth flowchart of a fault locating method for an LED identification tag according to an embodiment of the present application;
Fig. 9 is a sixth flowchart of a fault locating method for an LED identification tag according to an embodiment of the present application;
fig. 10 is a seventh flowchart of a fault locating method for an LED identification tag according to an embodiment of the present application;
FIG. 11 is an eighth flowchart of a method for locating faults of an LED identification tag according to an embodiment of the present application;
FIG. 12 is a block diagram of an LED sign fault locating device according to 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 tags; 40-an intelligent power supply; 50-a temperature sensor; a 60-LED light emitting device; 401-a microcontroller; 402-a current sense amplifier; r5-a first resistor; r6-a second resistor; c1-a first capacitance; 200-an acquisition module; 202-a judging module; 204-a determination module; 3-an electronic device; 301-a processor; 302-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 application provides an LED identification tag fault location system, which includes a server 10, a camera 20, an LED identification tag 30, and an intelligent power supply 40, wherein the intelligent power supply 40 is electrically connected with the LED identification tag 30, and the intelligent power supply 40 and the camera 20 are electrically connected with the server 10. The intelligent power supply 40 is integrated with a data acquisition module, the data acquisition module can acquire the operation parameter information of the LED identification label 30 connected with the data acquisition module in real time, and can transmit/send the operation parameter information of the LED identification label 30 to the server 10 in a wired or wireless mode, and after the server 10 detects that the operation parameter information of the LED identification label 30 is abnormal, the camera 20 is controlled to capture to obtain a display interface image of the LED identification label 30, and the display interface image is processed to realize fault location of the LED identification label 30.
In an alternative implementation manner of this embodiment, as shown in fig. 2, the LED identification tag 30 may include a plurality of LED light emitting devices 60, the number of the intelligent power supplies 40 is also a plurality of 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 of the corresponding LED light emitting device 60 is collected and transmitted to the server 10, after the server 10 detects that there is an abnormal LED light emitting device 60, the camera is controlled to capture to obtain a display interface image of the LED identification tag 30, and the display interface image is processed to determine the position of the failed LED light emitting device 60. The LED sign plate can be specifically divided into LED sign illumination, LED lamp box illumination and LED decorative illumination; the LED identification lighting can be specifically an LED exposed character, an LED plane character and the like; the LED lamp box illumination can be specifically an LED lamp box side luminous light source, an LED lamp box backlight luminous light source and the like; the LED decorative lighting can be an LED decorative straight strip, a down lamp, a panel lamp, a T5 lamp tube and the like.
In an alternative implementation of the present embodiment, as shown in fig. 2, the system may further include a temperature sensor 50, since the intelligent power supply generates much heat with a relatively large power, the temperature sensor 50 may be disposed on the intelligent power supply 40 and connected to the server 10, so as to transmit the temperature of the intelligent power supply 40 to the server 10 for monitoring whether the temperature of the intelligent power supply 40 is abnormal; the temperature sensor 50 may also monitor whether the temperature of the main line is abnormal, environmental temperature information of the LED identification tag 30 or the LED lighting device 60, and the like.
IN an alternative implementation manner of this embodiment, as shown IN fig. 3, the data acquisition module integrated by the smart power supply 40 may specifically include a microcontroller 401 and a current acquisition circuit, where the current acquisition circuit includes a current sense amplifier 402, a first resistor R5, a second resistor R6, and a first capacitor C1, where 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 grounded through the first capacitor C1.
Second embodiment
The present embodiment provides a fault location method for an LED identification tag, which is applied to the server 10 in the first embodiment to locate a fault of the LED identification tag, as shown in fig. 4, and specifically includes the following steps:
step S200: and acquiring the operation parameter information of the LED identification label.
Step S202: and judging whether the LED identification label has faults or not according to the operation parameter information of the LED identification label, and if so, turning to step S204.
Step S204: and acquiring a display interface image of the LED identification label.
Step S206: and determining the position of the LED luminous device with faults in the LED identification tag according to the display interface image of the LED identification tag.
In step S200, the operation parameter information of the LED identification tag represents current operation parameter information of the LED identification tag, which may include current power parameter information of the LED identification tag, such as current, voltage, resistive impedance in the load circuit, and the like, and may also be information such as operation temperature of the LED identification tag; the data acquisition module in the intelligent power supply in the first embodiment can acquire the operation parameter information of the LED identification tag and send the operation parameter information to the server, and the server can execute step S202 after executing step S200 to acquire the operation parameter information of the LED identification tag.
In step S202, the server determines 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 determine whether the LED identification tag has a fault according to the power parameter information of the LED identification tag, for example, whether it has a short circuit according to the voltage parameter, etc.; when the operating parameter information is the operating temperature, whether the temperature exceeds the standard can be judged to determine whether the LED identification label is short-circuited. 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 identification tag has failed, step S204 is performed.
In step S204, the server controls the camera described in the first embodiment to snap the display interface of the LED identification tag, so as to obtain a display interface image of the LED identification tag, where the display interface image of the LED identification tag is an image of a pattern currently displayed by the LED identification tag, for example, characters, LOGO, etc. displayed by the current billboard. After the server obtains the display interface image of the LED identification sign, step S206 may be performed.
In step S206, the server further determines the location of the failed LED lighting device in the LED identification tag according to the display interface image of the LED identification tag obtained in step S204. Specifically, the server can compare the currently-snapped image of the display interface with a pre-stored normal image of the LED identification label, so as to determine the position of the failed LED lighting device; the server can also input the images of the display interface obtained by the snapshot into a pre-trained neural network model to determine the position of the failed LED lighting device.
In the LED identification label fault positioning method, whether the LED identification label has faults or not is judged through the operation parameter information of the LED identification label, after the faults are determined, the display interface image of the LED identification label is obtained, and then the position of the LED light-emitting device with the faults is determined according to the display interface image of the LED identification label, so that the problem that the existing LED identification label cannot perform fault detection and cannot perform fault positioning by naked eyes when small-area faults occur is solved, the operation safety of the LED identification label is improved, the fault position can be timely determined, and the convenience and rapidity of subsequent maintenance of the LED identification label are ensured.
In an alternative implementation manner of this embodiment, the foregoing description that the operation parameter information of the LED identification tag includes the electrical energy parameter information of the LED identification tag, and on this basis, step S202 determines whether the LED identification tag has a fault according to the operation parameter information of the LED identification tag, as shown in fig. 5, specifically may be the following steps:
step S2020: it is determined whether the power parameter information of the LED identification tag is the same as the power parameter information pre-stored in the database, and if so, the process goes to step S2021.
Step S2021: it is determined that the LED identification tag is malfunctioning.
In step S2020, the database of the server stores the power parameter information of the LED identification tag during normal operation in advance, after the server obtains the current power parameter information of the LED identification tag in step S200, the server compares the current power parameter information of the LED identification tag with the stored power parameter information to determine whether the current power parameter information of the LED identification tag is identical to the stored power parameter information, and if the current power parameter information of the LED identification tag is not identical to the stored power parameter information, it is indicated that the LED identification tag may fail, and step S2021 is executed to determine that the LED identification tag fails.
In an alternative implementation of this embodiment, since the LED identification tag 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.
Based on this, step S202 judges whether the LED identification tag has a fault according to the operation parameter information of the LED identification tag, which may be specifically:
step S2022: comparing the power parameter information of each LED lighting device with the corresponding power parameter information stored in the database, judging whether there is a LED lighting device with power parameter information different from the corresponding power parameter information stored in the data, if so, proceeding to step S2023.
Step S2023: it is determined that the LED identification tag is malfunctioning.
In step S2000, it has been described in the first embodiment that there may be a plurality of intelligent power supplies, each of which may collect the power parameter information of the corresponding connected LED lighting device and transmit/send the power parameter information to the server, so that the server may obtain the power parameter information of each LED lighting device and perform step S2021; it should be noted that, because the display requirements of different display portions of the display interface of the LED sign, such as brightness, color, model, etc., may cause the operating power parameter information of different LED light emitting devices to be different, for example, the voltage or current of the LED light emitting devices is different when the brightness is different, it is necessary to obtain the power parameter information of each LED light emitting device; in addition, in order to identify each LED light emitting device by the server, each intelligent power supply for collecting the operation parameters of the LED light emitting device can be numbered differently, and then the LED light emitting device collected by each intelligent power supply can 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, to determine whether there is an LED lighting device with electrical energy parameter information different from the electrical energy parameter information stored in the data, if so, it is indicated that the LED lighting device may fail, and step S2023 is further executed to determine that the LED identification tag fails.
In an alternative implementation manner of this embodiment, before the operation parameter information of the LED identification tag is acquired in step S200, as shown in fig. 7, the method may further include:
step S190: the current ambient temperature of the LED identification tag is obtained.
Based on this, the step S200 of obtaining the operation parameter information of the LED identification tag may specifically be:
step S2001: and acquiring a current change curve of the LED identification tag at the current ambient temperature.
Step S202 judges whether the LED identification label has a fault according to the operation parameter information of the LED identification label, which can be specifically as follows: step S2024: judging whether the current change curve of the LED identification tag at the current ambient temperature is the same as the current change curve of the LED identification tag at the same ambient temperature pre-stored in the database, and if so, going to step S2025.
Step S2025: it is determined that the LED identification tag is malfunctioning.
In step S190, it has been described in the first embodiment that the current ambient temperature of the LED identification tag can be acquired by the temperature sensor and transmitted to the server, and the server can obtain the current ambient temperature of the LED identification tag, and then step S2001 is performed.
In step S2001, the operating parameters of the LED identification tag are different, for example, the current levels are different, and the generated temperatures are different, so that a current change curve of the LED identification tag at the current ambient temperature may be obtained, and step S2024 is further performed to determine whether the current change curve of the LED identification tag at the current ambient temperature is the same as the current change curve of the LED identification tag at the same ambient temperature pre-stored in the database, if not, it is indicated that the LED identification tag may fail, and step S2025 is further performed to determine that the LED identification tag fails.
In an alternative implementation manner of this embodiment, as shown in fig. 8, step S190 may specifically be to obtain the current ambient temperature of the LED identification tag: step S1900: the current ambient temperature of each LED lighting device is obtained.
Based on this, step S2001 obtains a current change 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 judges whether the current change curve of the LED identification tag at the current ambient temperature is the same as the current change curve of the same ambient temperature pre-stored in the database, which specifically may be:
step S20240: comparing the current change curve of each LED light emitting device at the current ambient temperature with the current change curve of each LED light emitting device at the same ambient temperature pre-stored in the database, judging whether the LED light emitting device has different current change curves at the current ambient temperature and the same ambient temperature pre-stored in the database, if so, turning to step S20241.
Step S20241: it is determined that the LED identification tag is malfunctioning.
In step S1900, it has been described that, because the display requirements of different display portions of the display interface of the LED identification tag are different, such as brightness, color, model, etc., the electric energy operation parameters of the LED lighting devices are different, and different heat energy is emitted, so that the environmental temperatures of different LED lighting devices may be different, it is necessary to collect the current environmental temperature of each LED lighting device and perform step S20010 to obtain the current change curve of each LED lighting device at the current environmental temperature, and further perform step S20240 to compare the current change curve of each LED lighting device at the current environmental temperature with the current change curve pre-stored in the database at the same environmental temperature, and determine whether there is a LED lighting device with a fault if there is a current change curve of each LED lighting device pre-stored in the database at the same environmental temperature, and further perform step S20241 to determine that the LED identification tag has a fault.
In an alternative implementation manner of this embodiment, step S206 determines, according to a display interface image of the LED identification tag, a location of the LED lighting device where the fault occurs in the LED identification tag, where it has been described that the fault location may be determined by comparing a snap shot image with a pre-stored image, and may also be determined by a neural network model, this embodiment is illustrated in an image comparison manner, 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 level image of the original image of the LED identification tag in the normal display state.
Step S2062: and determining the position of the failed LED light emitting device according to the first gray level image and the second gray level image.
In step S2060, after obtaining the display interface image of the LED identification label according to step S204, the server performs gray conversion on the obtained display interface image, and further converts the obtained display interface image into a first gray image; specifically, the gray-scale conversion may be performed on the display interface image by the software opencv, and step S2061 is further performed.
In step S2061, the database stores the second gray level image of the original image of the display interface of the LED identification sign in the normal display state, that is, in the complete display state. Specifically, the method includes that under the normal state of the LED identification label, a snapshot is performed on a display interface, further, gray conversion is performed on an image obtained by the snapshot to generate a second gray image, the second gray image is stored in a database of a server, and when the server executes step S2061, the second gray image is called, and further, step S2062 is executed to determine the position of the failed LED light emitting device according to the first gray image and the second gray image. As shown in fig. 10, the specific steps of step S2062 may be as follows:
Step S20621: and judging whether the pixel points with different pixel values and at the same position exist in the first gray level image and the second gray level image, if so, going to the step S20622.
Step S20622: and determining the pixel points with different pixel values and at the same positions as the positions of the LED light emitting devices with light emission faults.
In step S20621, the server compares the pixel values of the pixels at the same position in the first gray scale image and the second gray scale image one by one, and determines whether the pixel values of the pixels at the same position are equal, if not, it is indicated that the LED light emitting device at the pixel position is likely to be the failed LED light emitting device, so step S20622 may be executed to determine the pixels at the same position with different pixel values as the position of the LED light emitting device with light emission failure.
In an alternative implementation of the present embodiment, when 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: inputting the display interface image of the LED identification label into a preset fault position determining model to obtain the fault position output by the preset fault position determining model.
Before step S2063, the preset neural network model may be trained to obtain a preset fault location determining module, and the specific training process may be obtained after training the preset neural network model according to multiple types of display interface images. Specifically, the multiple types of display interface images can be multiple display interfaces under the normal fault-free condition, images of faults of each display part of the display interface of the LED identification label, images of faults of multiple display parts of the display interface of the LED identification label, images on fire of the display interface of the LED identification label and the like, the multiple types of display interface images are input into a preset neural network model, corresponding feature vectors of each type are respectively extracted, training loss of the multiple types of display interface images is calculated through a contrast loss function based on the feature vectors of each type, and further, the training-completed fault position determination model can be obtained after the iteration times are completed or the parameters of the model meet the requirements according to the counter propagation algorithm and the parameters of the training loss iterative neural network model.
In step S2063, the display interface image of the LED identification tag currently captured is input into the above-mentioned failure location determination model after training is completed, and then the feature vector of the display interface image currently captured is extracted by the preset failure location determination model, and the image of the type most similar to the feature vector of the display interface image currently captured is found, and then the failure location of the display interface image currently captured is determined according to the image of the most similar type.
Third embodiment
Fig. 12 shows a schematic block diagram of a fault locating device for an LED sign provided in the present application, where the LED sign includes a plurality of LED light emitting devices, and it should be understood that the device corresponds to the method embodiment executed in fig. 4 to 11, and is capable of executing the steps involved in the method executed by the server in the first embodiment, and specific functions of the device may be referred to the above description, and detailed descriptions are omitted herein as appropriate to avoid redundancy. The device includes at least one software functional module that can be stored in memory in the form of software or firmware (firmware) or cured in an Operating System (OS) of the device. Specifically, the device comprises: the acquisition module 200 is used for acquiring the operation parameter information of the LED identification tag; the judging module 202 is configured to judge whether the LED identification tag has a fault according to the operation parameter information of the LED identification tag; the obtaining module 200 is further configured to obtain a display interface image of the LED identification tag after determining that the LED identification tag fails; a determining module 204 is configured to determine a location of the failed LED lighting device in the LED identification placard based on the display interface image of the LED identification placard.
In the LED identification label fault positioning device, whether the LED identification label breaks down or not is judged through the operation parameter information of the LED identification label, after the occurrence of the fault is determined, the display interface image of the LED identification label is obtained, and then the position of the LED light-emitting device which breaks down is determined according to the display interface image of the LED identification label, so that the problem that the existing LED identification label cannot perform fault detection and cannot perform fault positioning by naked eyes when a small-area fault occurs is solved, the operation safety of the LED identification label is improved, the fault position can be timely determined, and the convenience and rapidity of the subsequent maintenance of the LED identification label are ensured.
In an alternative implementation manner of this embodiment, the operation parameter information of the LED identification tag includes electrical energy parameter information of the LED identification tag, and the judging module 202 is specifically configured to judge whether the electrical energy parameter information of the LED identification tag is the same as the electrical energy parameter information pre-stored in the database; if not, determining that the LED identification label fails.
In an alternative implementation manner of the present embodiment, the obtaining module 200 is specifically configured to obtain electrical energy parameter information of each LED lighting device; the judging module 202 is specifically configured to compare the electrical energy parameter information of each LED lighting device with the electrical energy parameter information corresponding to the electrical energy parameter information stored in the database, and judge whether the LED lighting device has electrical energy parameter information different from the electrical energy parameter information corresponding to the electrical energy parameter information stored in the data; if so, determining that the LED identification label fails.
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; the current change curve of the LED identification label at the current ambient temperature is obtained; 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 pre-stored in the database; if not, determining that the LED identification label fails.
In an optional implementation manner of this embodiment, the determining module 204 is specifically configured to convert the display interface image of the LED identification tag into a first gray image; acquiring a second gray level image of an original image of the LED identification tag in a normal display state; and judging the position of the LED light-emitting device with faults according to the first gray level image and the second gray level image.
Third embodiment
As shown in fig. 13, the present application provides an electronic apparatus 3 including: processor 301 and memory 302, the processor 301 and the memory 302 being interconnected and in communication with each other by 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, which when executed by a computing device, the processor 301 executes the method of the first embodiment, any alternative implementation of the first embodiment, such as step S200 to step S206: acquiring operation parameter information of the LED identification label; judging whether the LED identification label has faults or not 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 luminous device with faults in the LED identification tag according to the display interface image of the LED identification tag.
The present application provides a storage medium having stored thereon a computer program which, when executed by a processor, performs the method of the first embodiment, any of the alternative implementations of the first embodiment.
The storage medium may be implemented by any type of volatile or nonvolatile Memory device or combination thereof, such as static random access Memory (Static Random Access Memory, SRAM), electrically erasable Programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), erasable Programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), programmable Read-Only Memory (PROM), read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk, or optical disk.
The present application provides a computer program product which, when run on a computer, causes the computer to perform the method in the first embodiment, any optional implementation of the first embodiment.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
Further, the units described as separate units may or may not be physically separate, and units displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Furthermore, functional modules in various embodiments of the present application may be integrated together to form a single portion, or each module may exist alone, or two or more modules may be integrated to form a single portion.
It should be noted that the functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM) random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
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 foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application, and various modifications and variations may be suggested to one skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (10)
1. A method of fault location of an LED identification sign, the LED identification sign comprising a plurality of LED light emitting devices, the method comprising:
acquiring the operation parameter information of the LED identification label;
judging whether the LED identification label has faults or not according to the operation parameter information of the LED identification label;
if yes, acquiring a display interface image of the LED identification label;
determining the position of an LED lighting device with faults in the LED identification tag according to the display interface image of the LED identification tag;
The determining the position of the LED lighting device with faults in the LED identification tag according to the display interface image of the LED identification tag comprises the following steps:
converting the display interface image of the LED identification label into a first gray image;
acquiring a second gray level image of an original image of the LED identification tag in a normal display state;
determining the position of the failed LED light emitting device according to the first gray level image and the second gray level image;
the determining the position of the failed LED lighting device according to the first gray scale image and the second gray scale image includes:
judging whether pixel points with different pixel values and at the same position exist in the first gray level image and the second gray level image;
if yes, the pixel points with the same positions and different pixel values are determined to be the positions of the failed LED light-emitting devices.
2. The method of claim 1, wherein the operating parameter information of the LED identification tag includes power parameter information of the LED identification tag, and wherein determining whether the LED identification tag has failed based on the operating parameter information of the LED identification tag includes:
Judging whether the electric energy parameter information of the LED identification label is the same as the electric energy parameter information pre-stored in a database;
if not, determining that the LED identification label fails.
3. The method of claim 1, wherein the obtaining the operating parameter information of the LED identification tag comprises:
acquiring electric energy parameter information of each LED light-emitting device;
judging whether the LED identification label has faults according to the operation parameter information of the LED identification label comprises the following steps:
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 device with the electric energy parameter information different from the corresponding electric energy parameter information stored in the database exists or not; if yes, determining that the LED identification label fails.
4. The method of claim 1, wherein prior to obtaining the operating parameter information for the LED identification tag, the method further comprises:
acquiring the current ambient temperature of the LED identification tag;
the obtaining the operation parameter information of the LED identification tag includes:
acquiring a current change curve of the LED identification tag at the current ambient temperature;
Judging whether the LED identification label has faults according to the operation parameter information of the LED identification label comprises the following steps:
judging whether the current change curve of the LED identification label at the current ambient temperature is the same as the current change curve of the LED identification label at the same ambient temperature pre-stored in a database;
if not, determining that the LED identification label fails.
5. The method of claim 4, wherein the obtaining the current ambient temperature of the LED identification tag comprises: acquiring the current ambient temperature of each LED light-emitting device;
the obtaining the current change curve of the LED identification tag at the current ambient temperature includes: acquiring a current change curve of each LED light-emitting device at the current ambient temperature;
judging whether the LED identification label has faults according to the operation parameter information of the LED identification label comprises the following steps:
comparing the current change curve of each LED light-emitting device at the current ambient temperature with the current change curve of each LED light-emitting device at the same ambient temperature pre-stored in the database, and judging whether the LED light-emitting device has different current change curves at the current ambient temperature and the same ambient temperature pre-stored in the database; if yes, determining that the LED identification label fails.
6. An LED identification signage fault locating device, wherein the LED identification signage includes a plurality of LED lighting devices, the LED identification signage fault locating device includes:
the acquisition module is used for acquiring the operation parameter information of the LED identification tag;
the judging module is used for judging whether the LED identification label has faults or not 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 label after judging that the LED identification label fails;
the determining module is used for determining the position of the LED light-emitting device with the fault in the LED identification tag according to the display interface image of the LED identification tag;
the determining module is specifically configured to convert a display interface image of the LED identification tag into a first gray image; acquiring a second gray level image of an original image of the LED identification tag in a normal display state; determining the position of the failed LED light emitting device according to the first gray level image and the second gray level image;
the determining module is specifically configured to determine whether there are pixel points in the first gray scale image and the second gray scale image at the same position where the pixel values are different; if yes, the pixel points with the same positions and different pixel values are determined to be the positions of the failed LED light-emitting devices.
7. The LED identification label fault positioning system is characterized by comprising a server, a camera, an LED identification label comprising a plurality of LED luminous 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 faults or not according to the operation parameter information of the LED identification label; if yes, the camera is controlled to shoot the display interface of the LED identification label, a display interface image of the LED identification label is obtained, and the display interface image of the LED identification label is converted into a first gray image; acquiring a second gray level image of an original image of the LED identification tag in a normal display state; determining the position of the failed LED light emitting device according to the first gray level image and the second gray level image; the determining the position of the failed LED lighting device according to the first gray scale image and the second gray scale image includes: judging whether pixel points with different pixel values and at the same position exist in the first gray level image and the second gray level image; if yes, the pixel points with the same positions and different pixel values are determined to be the positions of the failed LED light-emitting devices.
8. The system of claim 7, wherein the number of said intelligent power sources is a plurality, said number of intelligent power sources being the same as the number of said LED lighting devices, each said intelligent power source being electrically connected to one LED lighting device;
each intelligent power supply is internally integrated with a data acquisition module, which is used for acquiring the operation parameter information of the corresponding connected LED light-emitting device and transmitting the operation parameter information of the corresponding connected LED light-emitting device to the server;
the server is used for judging whether the LED light-emitting devices with faults exist in the plurality of LED light-emitting devices according to the operation parameter information of each LED light-emitting device; if yes, the camera is controlled to shoot the display interface of the LED identification label, a display interface image of the LED identification label is obtained, and the position of the LED light-emitting device with faults in the LED identification label is determined according to the display interface image of the LED identification label.
9. The system of claim 7, 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, an in+ pin of the current sense amplifier being electrically connected to a corresponding LED lighting device, an IN-pin of the current sense amplifier being grounded, a GND pin of the current sense amplifier being grounded, a REF pin of the current sense amplifier being grounded through the first resistor, an OUT pin of the current sense amplifier being electrically connected to the microcontroller through the second resistor and being grounded through the first capacitor.
10. The system of claim 7, further comprising a temperature sensor disposed within the smart power source, the temperature sensor electrically connected to the server;
the temperature sensor is used for measuring the current temperature of the corresponding intelligent power supply and transmitting the current temperature obtained by measurement to the server;
and the server is used for judging whether the intelligent power supply with the current temperature exceeding the safety value exists or not, and if yes, prompting information is sent out.
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