Circuit for detecting abnormity of LED module

Abstract

The invention belongs to the technical field of LED display screen circuit design, and provides a circuit for detecting the abnormity of an LED module, which comprises a display screen module, and is characterized in that the display screen module comprises an intelligent module, a power input, a control output and an LED control circuit, the intelligent module is electrically connected with the output end of the power input and the output end of the control signal input, and the LED control circuit is electrically connected with the intelligent module. The output end of the intelligent module is electrically connected with the LED control circuit; the intelligent module is arranged and used for detecting the safety of the power supply and the stability of the signal, when the power supply is short-circuited or the signal is abnormal, the intelligent module triggers a short-circuit protection mechanism / adjusts the working state of the LED control circuit to protect the LED module, and when the abnormality is solved, the intelligent module automatically recovers to work.

Description

Technical Field

[0001] The invention belongs to the technical field of LED display screen circuit design, in particular to a circuit for detecting abnormalities of LED modules. Background Art

[0002] LED display screen is a device that uses the light-emitting diode (LED) to achieve display effects. With the increasing market demand for LED display screens, a large number of display screen products have been delivered to the terminal. However, since LED display screens need to be used for a long time and the staff will not always monitor the use of the display screen, the display screen may be damaged due to abnormal signals and power supply under harsh conditions, which may eventually lead to safety accidents.

[0003] Therefore, those skilled in the art have proposed a circuit for detecting abnormality of an LED module to solve the problem raised by the background art. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a circuit for detecting abnormalities of LED modules. At the product design end, through LED circuit design, the power supply of the module is controlled on a module basis to solve the problems existing in the prior art.

[0005] A circuit for detecting abnormality of an LED module, comprising a display screen module and a power supply, characterized in that: the display screen module comprises an intelligent module, a power input, a control output and an LED control circuit, the intelligent module is used to detect the safety of the power supply and the stability of the signal, when the power supply is short-circuited or the signal is abnormal, the intelligent module will trigger the short-circuit protection mechanism / adjust the working state of the LED control circuit to protect the LED module, and when the abnormality is resolved, the work will be automatically restored;

[0006] The power input is used to replicate and provide power to the entire system, and the LED control circuit is used to control the state of the LED module.

[0007] Preferably, the intelligent module is electrically connected to the output end of the power input and the control signal input, the output end of the intelligent module is electrically connected to the LED control circuit, the power input is connected to the intelligent module to provide power for the intelligent module, the control signal input is connected to the intelligent module to transmit the external control signal to the intelligent module, the intelligent module is connected to the LED control circuit, and the operation of the LED control circuit is controlled according to the judgment result of the intelligent module.

[0008] Preferably, it further comprises: a power detection module and a signal detection module, wherein the power detection module and the signal detection module are electrically connected to the intelligent module respectively.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. The present invention solves the problem of display screen damage caused by the environment by enhancing the reliability of the product, thereby improving the safety of the module;

[0011] 2. The present invention monitors the power supply and signal of the display screen, and automatically solves the abnormal module when encountering it, thereby solving the problem of requiring long-term monitoring by staff and improving the application effect of the display screen module. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of an intelligent module for detecting abnormal circuits of LED modules according to the present invention;

[0013] Figure 2 This is a schematic diagram of the power detection chip circuit of the present invention;

[0014] Figure 3 This is a circuit diagram of a signal detection module of the present invention;

[0015] Figure 4 is a schematic diagram of a signal amplification circuit of the present invention;

[0016] Figure 5 It is a schematic diagram of the row driver chip circuit of the present invention;

[0017] Figure 6 It is a schematic diagram of a signal input circuit of the present invention;

[0018] Figure 7 This is a schematic diagram of a column constant current drive chip circuit of the present invention;

[0019] Figure 8 This is a schematic diagram of the LED lamp bead circuit of the present invention;

[0020] Fig. 9 It is a working diagram of the power supply detection module of the present invention;

[0021] Fig.10 The signal detection module of the present invention is a working flow chart. DETAILED DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] As attached Figure 1 To Attachment Fig.10 As shown:

[0024] Embodiment 1: The present invention provides a circuit for detecting abnormality of an LED module, including a display screen module, wherein the display screen module includes an intelligent module, a power input, a control output and an LED control circuit.

[0025] Specifically, the intelligent module is electrically connected to the output end of the power input and the control signal input, and the output end of the intelligent module is electrically connected to the LED control circuit.

[0026] Specifically, the circuit further includes: a power detection module and a signal detection module, and the power detection module and the signal detection module are electrically connected to the intelligent module respectively.

[0027] From the above content and Figure 1 As shown in the figure, when the power input provides power to the system, the intelligent module starts to work. When the control signal input provides a signal to the intelligent module, the intelligent module starts to make judgments. First, the intelligent module will check whether there is a power supply abnormality or a control signal abnormality. This judgment process is achieved through two steps: "whether" and "whether there is an abnormality":

[0028] 1) If there is a power anomaly, the smart module may trigger the short-circuit protection mechanism to prevent the power failure from causing further damage to the system;

[0029] 2) If the control signal is abnormal, the intelligent module will adjust the working state of the LED control circuit to prevent the LED module from being damaged due to abnormal signals;

[0030] If the power supply and control signal are normal, the intelligent module will adjust the working state of the LED module through the LED control circuit according to the instructions of the control signal, thereby improving the safety of the module.

[0031] From the above, we can see that the system monitors the power supply and control signals through the intelligent module to ensure that the LED module operates under normal working conditions and avoid damage caused by abnormal signals or power problems.

[0032] Combination Figure 2 As shown, Figure 2The invention discloses a power detection chip for a power detection module, which includes a power supply (VCC IN and VCC are two different voltage sources), an input port (VIN), a capacitor, an integrated circuit (I CE), a control signal (EN) and an output port (VOUT). The connection mode of the chip is as follows: the input port VIN is connected to an input terminal of an integrated circuit IC-E through a capacitor; the power supplies VCC IN and VCC are connected to the power supply terminal of the integrated circuit I CE to supply power to the integrated circuit; the output port VOUT is led out from an output terminal of the integrated circuit IC-E; the control signal EN is connected to a control terminal of the integrated circuit IC-E and is connected to a ground line GND through a node. When the EN signal is valid, it can form a path with the ground line GND, thereby affecting the working state of the integrated circuit I CE; its working principle: the input signal enters the circuit through VIN, and after filtering by the capacitor, enters the integrated circuit I CE, the integrated circuit I CE processes and converts the signal according to its internal circuit and function, and then outputs it through VOUT, the control signal EN controls the working state of the integrated circuit I CE, and the power supplies VCC IN and VCC provide the integrated circuit I CE with the electric energy required for working.

[0033] Combination Figure 3 As shown, Figure 3 It is a signal detection module, which is connected through wires to form different circuit paths. Its working principle is: data is input through DI and output from DO after processing. The clock signal CLK controls the rhythm of data processing to ensure that each operation is performed in the correct order and time. The resistor is used to limit the current to protect other components in the circuit. The power supply VCC provides the required power for the entire circuit, and GND provides a common reference potential for the circuit.

[0034] Combination Figure 4 As shown, Figure 4 The signal amplification circuit shows three different circuit board layouts. Each layout contains resistors, capacitors and other electronic components, which are connected together by wires to form a complete circuit. Its working principle: through the connection between components and the transmission of signals, these functional modules work together to realize the function of the entire circuit.

[0035] Combination Figure 5 As shown, Figure 5It is a row driver chip circuit, whose VCC and VDD are power supply voltages and GND is ground. Each component of the row driver chip circuit is connected to other components through specific pins to realize the transmission of electrical signals or currents. The VCC and GND pins are usually connected to multiple locations in the circuit to provide power and reference potential for different parts. Its working principle is: various components work together to achieve specific functions; VCC provides the required power for the circuit, and GND ensures that the current can flow back; other components such as UU series and CU series may perform tasks such as signal processing, amplification, and control; different pins (such as SDI, SDO, HCLK1, etc.) are responsible for receiving and sending data and clock signals to control data flow and circuit operation.

[0036] Combination Figure 6 As shown, Figure 6 It is a signal input circuit. The signal input circuit transmits and connects electrical signals between the pins of each component through wires. These pins may be connected to power, ground or other signal lines, so that the entire circuit forms a closed loop to achieve specific functions. The connection between components follows the rules of circuit design to ensure that current and signals can flow correctly. Its working principle:

[0037] Resistors (such as R1 I, R21, Rn13, etc.) play a role in limiting the current, adjusting the voltage or dividing the voltage in the circuit; according to Ohm's law, the resistor has an obstructive effect on the current and can protect other components in the circuit from damage by excessive current;

[0038] Capacitors (such as 33pF, 33nE, etc.) are used to store charge, smooth voltage fluctuations, and play a filtering role in the circuit; they can provide stable voltage and current when the circuit is working, ensuring the stable operation of the circuit;

[0039] Pins (such as JP1, GND, VCC, etc.) are the connection points between components and external devices or power supplies. Through pins, components can receive external signals or power supply, and can also output signals or current to the outside.

[0040] From the above, we can see that the components are connected by wires to form a specific circuit structure to achieve the transmission and processing of electrical signals; resistors, capacitors and other components each play their own functions and jointly maintain the normal operation of the circuit.

[0041] Combination Figure 7 As shown, Figure 7The constant current drive chip circuit is a series of components including resistors (R), capacitors (C), diodes (D), integrated circuits (IC) and other components. The components are connected by wires to form a closed circuit path; the intersection of the wires usually indicates the connection point between the components; the connection between different components realizes the transmission of current and signals to achieve specific circuit functions.

[0042] Combination Figure 8 As shown, Figure 8 It is an LED lamp bead circuit, whose components include an integrated circuit (IC), a resistor, a capacitor and a transistor. The connection between the components of the LED lamp bead circuit is realized through wires or traces on a circuit board; in the circuit diagram, the wires or traces connect different component pins to form a closed circuit path; each component has a specific pin for input, output or control signals.

[0043] Combination Fig. 9 As shown, Fig. 9 It is a power detection module. The signal processing flow of the power detection module is as follows: when the power detection module starts working, it can detect the state of the E signal, that is, whether it is normal. According to the detection result, the signal will be divided into two paths: one is the "normal E signal" and the other is the "abnormal E signal". When working normally, the signal detection module will generate a corresponding control signal, and then the control signal will be transmitted to the output module. If the control signal is in a normal state, the output module will work normally; but if the control signal is pulled low (that is, the signal becomes a low level or 0 state), the output module will stop working and the module will not light up;

[0044] From the above, we can see that the power detection module first ensures the validity of the power supply and signal, and then processes the signal finely through the signal detection module. The processed signal determines the action of the output module, that is, whether to light up, ensuring the stability and reliability of the system. Especially in the face of abnormal signals, it can prevent the module from malfunctioning by effectively managing the control signal. The power detection module embodies the basic working principles of signal detection, processing and control, and realizes effective control of the output module through a series of modules and signal transmission.

[0045] Combination Fig.10 As shown, Fig.10It is a signal detection module, and the processing flow of the signal detection module is as follows: when the signal detection module detects the status of the control signal input, if the control signal input is normal, the signal detection module will output a normal E signal. At this time, the power detection module is marked as "normal operation", so that the power detection module can output current, and if the control signal input is abnormal, the module will output an abnormal E signal; at this time, the power detection module will be marked as "abnormal operation" state, so that the power detection module is not running or cannot work normally.

[0046] To sum up, the intelligent module is used to detect the safety of power supply and the stability of signal. When the power supply is short-circuited or the signal is abnormal, the intelligent module will trigger the short-circuit protection mechanism / adjust the working state of the LED control circuit to protect the LED module. When the abnormality is resolved, it will automatically resume work.

[0047] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A circuit for detecting abnormality of an LED module, comprising a display screen module, characterized in that: The display screen module includes an intelligent module, a power input, a control output and an LED control circuit.

2. A circuit for detecting abnormality of an LED module as claimed in claim 1, characterized in that: The intelligent module is electrically connected to the output end of the power input and the control signal input, and the output end of the intelligent module is electrically connected to the LED control circuit.

3. A circuit for detecting abnormality of an LED module as claimed in claim 1, characterized in that: Also includes: A power detection module and a signal detection module, wherein the power detection module and the signal detection module are electrically connected to the intelligent module respectively.

Images