Detection and protection device for T5 line in double-power-off state

Abstract

The utility model discloses a detection protection device for a T5 line in a double-power-off state, which comprises a voltage detection unit, a current detection unit, a power management unit and a protection execution unit which are connected with a processor unit, and the voltage detection unit is connected in parallel to the positive and negative ends of the T5 line to detect voltage; the current detection unit is connected in series in the T5 line to measure current; the power management unit provides stable working voltage for the processor unit and the protection execution unit. The processor unit is used for receiving and processing the voltage and current data, and the processor unit controls the on-off protection action of the protection execution unit; the protection execution unit comprises a switch element and a driving circuit, the driving circuit is connected with the processor unit, the output end of the driving circuit is connected with the switch element, and the switch element is connected in series or in parallel in the T5 line to realize quick disconnection or impedance adjustment of the T5 line and protect the safety of the circuit. According to the utility model, the risk of circuit faults is reduced, and the service life of equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to television technology field especially relates to the detection protection device of T5 line under double power -off state. BACKGROUND

[0002] In the prior art of television technology, stable AC power supply is crucial for the normal operation of the television. However, when the AC power is off or the television is in standby state, the T5 line may have transient voltage or abnormal current, causing internal circuit components to be damaged, affecting the service life and performance of the television.

[0003] During the AC power outage or the television standby moment, the T5 line may generate transient voltage or abnormal current, causing circuit components to be damaged. In the full black and white display mode, the screen is prone to image sticking phenomenon, affecting the viewing experience and service life. The existing protection circuit or module has deficiencies in detection accuracy, response speed, structural integration, etc. UTILITY MODEL CONTENT

[0004] The utility model aims at providing the detection protection device of T5 line under double power -off state, optimizing the T5 line detection device structure of television in AC power outage moment and standby state moment.

[0005] The utility model adopts the technical scheme:

[0006] The detection protection device of T5 line under double power -off state includes processor unit and the voltage detection unit, current detection unit, power management unit and protection execution unit connected with processor unit, and the voltage detection unit is connected to the positive and negative two ends of T5 line to detect voltage;The current detection unit is connected in series in the T5 line to measure the current;The power management unit is connected with processor unit and protection execution unit respectively, and provides stable working voltage for processor unit and protection execution unit, prevents power noise interference signal processing;Processor unit is used to receive and process voltage and current data, and processor unit controls the on-off protection action of protection execution unit;Protection execution unit includes switching element and drive circuit, drive circuit connects processor unit, the output end of drive circuit connects switching element, and switching element is connected in series or parallel in T5 line to realize the quick disconnection or impedance adjustment of T5 line, and the safety of protection circuit is realized.

[0007] Further, the voltage detection unit comprises a high-precision voltage sensor, a signal conditioning circuit and a voltage processing unit; the high-precision voltage sensor is connected in parallel to the positive and negative electrodes of the T5 line; the input end of the voltage signal conditioning circuit is connected to the high-precision voltage sensor, and the voltage signal conditioning circuit is used for amplifying and filtering the detection signal of the high-precision voltage sensor; the output end of the voltage signal conditioning circuit is connected to the voltage processing unit, and the voltage processing unit is used for processing and sending the conditioned signal, and the output end of the voltage processing unit is connected to the processor unit.

[0008] Further, as a feasible implementation manner, the voltage detection unit is directly connected to the T5 line through the conductive copper foil.

[0009] Further, the current detection unit comprises a current sampling resistor, an operational amplifier and a current signal conditioning circuit; the current sampling resistor is connected in series to the T5 line, and the current is measured by using the voltage drop. The input end of the operational amplifier is connected to the sampling resistor, and the operational amplifier is used for amplifying and conditioning the current signal of the sampling resistor, and the output end of the operational amplifier is connected to the processor unit.

[0010] Further, the voltage detection unit and the current detection unit are connected to the processor unit through micro wires.

[0011] Further, the processor unit comprises a microcontroller, a first signal conditioning circuit, an analog-to-digital converter and a comparator; the voltage detection unit and the current detection unit are respectively connected to the first signal conditioning circuit, and the first signal conditioning circuit is used for conditioning the input signal; the output end of the first signal conditioning circuit is connected to the analog-to-digital converter, and the analog-to-digital converter is used for converting the analog signal into a digital signal; the output end of the analog-to-digital converter is connected to the microcontroller; the microcontroller performs data processing and logical judgment; the output end of the microcontroller is connected to the comparator; and the output end of the comparator is connected to the protection execution unit.

[0012] Further, the processor unit is connected to and controls the protection execution unit through a control signal line.

[0013] Further, the switching element and the driving circuit of the protection execution unit are integrated on a small-sized circuit board. Specifically, as a feasible implementation manner, the size of the small-sized circuit board is 15 mm in length, 10 mm in width and 2 mm in height. The stable power supply of the power management unit ensures the stable driving voltage of the switching element.

[0014] Further, the fast-response switching element comprises a MOSFET or a relay.

[0015] Further, the power management unit comprises a voltage stabilizer, a filter and a power isolation circuit, the input end of the voltage stabilizer is connected to the main power supply of the television set, and the output end of the voltage stabilizer is connected to the filter and the power isolation circuit in sequence.

[0016] Specifically, the power management unit provides stable DC voltage to the processor unit and the protection execution unit through a voltage stabilizer and a filter. The power isolation circuit prevents power noise from interfering with signal processing. The power management unit adopts a low-power design and uses a high-efficiency DC-DC converter. Further, the power management unit has a package size of 10mm in length x 10mm in width x 2mm in height.

[0017] Further, it also includes a housing for accommodating various circuit units, the housing is formed of high-strength and insulating flame-retardant material, and the housing as a whole is a flat cuboid. The housing as a whole can easily adapt to the installation requirements of the main board of a television set or other specific positions, improving the convenience and flexibility of installation.

[0018] Further, the housing is provided with a pluggable interface, and the detection and protection device of the T5 line in the double power-off state is connected to the main board of the television set through the pluggable interface to realize quick installation and disassembly, improving the maintenance efficiency. The housing is provided with cooling fins or partially formed of heat-conducting material to improve the heat dissipation performance and ensure stable operation for a long time.

[0019] Specifically, the housing has good dustproof and moisture-proof performance. The size is 50mm in length x 30mm in width x 10mm in height. It can be conveniently installed on the main board of a television set or a specific position.

[0020] Further, the processor unit, the voltage detection unit, the current detection unit, the power management unit and the protection execution unit adopt independent circuit boards. The use of independent circuit boards facilitates maintenance and upgrading.

[0021] The utility model adopts the above technical scheme, and detects and protects the voltage and current abnormalities that may occur in the AC power-off moment and standby state moment. The voltage detection unit and the current detection unit detect the voltage and current changes of the T5 line in real time and with high precision. When transient abnormalities occur in the television set, the switching elements of the protection execution unit connected in series or parallel in the T5 line rapidly respond to protect the circuit elements. The detection device adopts a high-integration structure, and the various circuit units are compact and can be integrated into the television set without affecting the original circuit layout. The detection device has a strong and reliable housing, uses high-quality materials and an optimized structure design, and ensures the stability of the detection device under different working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model will be further described in detail in combination with the drawings and specific embodiments.

[0023] Fig. 1 The circuit principle schematic diagram of the detection and protection device of the T5 line in the double power-off state of the utility model is shown in the figure.

[0024] Fig. 2The utility model discloses a circuit principle schematic drawing of voltage detection unit.

[0025] Fig. 3 The utility model discloses a circuit principle schematic drawing of current detection unit.

[0026] Fig. 4 The utility model discloses a circuit principle schematic drawing of processor unit.

[0027] Fig. 5 The utility model discloses a circuit principle schematic drawing of protection execution unit.

[0028] Fig. 6 The utility model discloses a circuit principle schematic drawing of power management unit.

[0029] Fig. 7 The utility model discloses a circuit principle schematic drawing of wireless communication unit. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantage of the embodiment of the application more clear, the technical scheme in the embodiment of the application will be clearly and completely described below in conjunction with the drawings in the embodiment of the application.

[0031] As Figs. 1 to 7 The utility model discloses a detection protection device of T5 line under double power-off state, it includes processor unit and with processor unit connection's voltage detection unit, current detection unit, power management unit and protection execution unit, voltage detection unit is connected in series at the both ends of T5 line's positive and negative pole to detect voltage, current detection unit is connected in series in T5 line to measure current, power management unit connects processor unit and protection execution unit respectively, and provides stable working voltage for processor unit and protection execution unit, prevents power noise interference signal processing, processor unit is used to receive and handle voltage current data, and processor unit controls the on-off protection action of protection execution unit, protection execution unit includes switching element and drive circuit, drive circuit connects processor unit, and the output of drive circuit is connected switching element, and switching element is connected in series or parallel in T5 line to realize the quick disconnection or impedance adjustment of T5 line, and the safety of protection circuit.

[0032] Further, the processor unit is composed of a multilayer high-speed signal processing circuit board, and has a size of about 20mm in length, 15mm in width and 2mm in height.

[0033] The processor unit comprises a microcontroller (MCU), a first signal conditioning circuit, an analog-to-digital converter (ADC) and a comparator; the processor unit receives signals from the voltage detection unit and the current detection unit, and after signal conditioning and analog-to-digital conversion, data processing and logical judgment are performed by the microcontroller MCU; the processor unit is connected to the protection execution unit through a control signal line to realize corresponding control operation. The power management unit is connected to obtain a stable working voltage.

[0034] Further, the voltage detection unit comprises a high-precision voltage sensor, a signal conditioning circuit and a voltage processing unit; the high-precision voltage sensor is connected in parallel to the positive and negative electrodes of the T5 line; the input end of the voltage signal conditioning circuit is connected to the high-precision voltage sensor, and the voltage signal conditioning circuit is used for amplifying and filtering the detection signal of the high-precision voltage sensor; the output end of the voltage signal conditioning circuit is connected to the voltage processing unit, and the voltage processing unit is used for processing and sending the conditioned signal; the output end of the voltage processing unit is connected to the processor unit.

[0035] Further, as a feasible implementation manner, the voltage detection unit is directly connected to the T5 line through a conductive copper foil.

[0036] Further, the current detection unit comprises a current sampling resistor, an operational amplifier and a current signal conditioning circuit; the current sampling resistor is connected in series in the T5 line, and the current is measured by using the voltage drop. The input end of the operational amplifier is connected to the sampling resistor, and the operational amplifier is used for amplifying and conditioning the current signal of the sampling resistor; the output end of the operational amplifier is connected to the processor unit.

[0037] Specifically, a Hall effect sensor can be used to replace the current sampling resistor to realize non-contact current detection and improve safety and accuracy.

[0038] Further, the voltage detection unit and the current detection unit are connected to the processor unit through micro wires.

[0039] Further, the processor unit is connected to and controls the protection execution unit through a control signal line.

[0040] Further, the switching element and the driving circuit of the protection execution unit are integrated on a small-sized circuit board. Specifically, as a feasible implementation manner, the size of the small-sized circuit board is 15 mm in length, 10 mm in width and 2 mm in height. The stable power supply of the power management unit ensures the stability of the driving voltage of the switching element.

[0041] Further, the fast-response switching element comprises a MOSFET or a relay, an IGBT or a thyristor.

[0042] Further, the power management unit comprises a voltage stabilizer, a filter and a power isolation circuit, the input of the voltage stabilizer is connected to the main power supply of the TV set, the output of the voltage stabilizer is connected to the filter and the power isolation circuit in sequence.

[0043] Specifically, the power management unit provides stable DC voltage to the processor unit and the protection execution unit through the voltage stabilizer and the filter. The power isolation circuit prevents power supply noise from interfering with signal processing. The power management unit adopts a low-power design and uses a high-efficiency DC-DC converter. Further, the packaging size of the power management unit is 10mm long x 10mm wide x 2mm high.

[0044] In addition, the power management unit can use a super capacitor or a small lithium battery as a backup power supply to ensure that the module can still operate normally and complete safety protection in the event of a power outage of the main power supply. Or further introduce an intelligent power management chip to dynamically adjust power consumption and improve energy utilization efficiency.

[0045] Further, it also includes a housing for accommodating various circuit units, the housing is made of high-strength and insulating flame-retardant material, and the housing as a whole is a flat cuboid; the overall housing can easily adapt to the installation requirements of the TV mainboard or other specific positions, improving the convenience and flexibility of installation.

[0046] Further, the housing is provided with a pluggable interface, and the detection protection device of the T5 line in the double power-off state is connected to the TV mainboard through the pluggable interface to realize quick installation and disassembly, improving the maintenance efficiency. The housing is provided with cooling fins or part of the area is formed by heat-conducting material, improving the heat dissipation performance and ensuring stable operation for a long time.

[0047] Specifically, the housing has good dustproof and moisture-proof performance. The size is 50mm long x 30mm wide x 10mm high. It can be conveniently installed on the mainboard of the TV set or in a specific position.

[0048] Further, the processor unit, the voltage detection unit, the current detection unit, the power management unit and the protection execution unit adopt independent circuit boards; using independent circuit boards facilitates maintenance and upgrading.

[0049] Further, it also includes a wireless communication unit connected to the processor unit; the wireless communication unit comprises a wireless receiver and an antenna, the wireless receiver is connected to the processor unit and the antenna respectively, and the processor unit is connected to other devices through the wireless communication unit.

[0050] Specifically, the wireless transceiver converts electrical signals into wireless signals, which are then transmitted and received via an antenna. Other devices can include multiple units that communicate using the wireless signals received through the antenna. Signals are transmitted from the processor unit to other devices via the wireless transceiver and antenna, and the reverse signal flow is also returned to the processor unit via the antenna and wireless transceiver. This architecture offers advantages such as flexibility and adaptability, reduces interference from physical connections, and helps improve system performance. Furthermore, the wireless communication unit employs standardized interfaces and protocols to achieve compatibility and interoperability between the detection device and other devices, facilitating expansion and upgrades.

[0051] The T5 line detection and protection device under dual power failure states of this utility model is meticulously designed within the internal structure of the television, positioned near the bottom. This location not only considers the overall weight distribution of the television but also ensures convenient connection between the module and other television components, and contributes to improved module cooling. The T5 line detection and protection device under dual power failure states connects to the motherboard and screen in two ways. This layout optimizes space utilization and ensures a more secure connection. First, it is tightly connected to the motherboard via a signal cable, with a set of precision pins tightly mating to the corresponding sockets on the motherboard, ensuring stable and efficient signal transmission and timely signal processing. Second, it is also connected to the screen's driver board via a separate set of flexible cable interfaces, ensuring stable and accurate display output. This design guarantees connection flexibility while reducing the risk of loosening due to vibration or external impact.

[0052] The input section between the T5 line detection and protection device and the main board in this invention under dual power-off conditions primarily relies on standard signals such as VBY1 and LVDS. These signals are transmitted from the main board to the detection device of this invention via dedicated connection cables, ensuring data continuity and accuracy. This input connection method effectively supports efficient signal transmission and maintains the high-quality picture output of the television. This invention obtains power from the television's power system through a pluggable interface to support its continuous operation. Simultaneously, the processing interface manages and optimizes the signal flow; this strategy ensures the effective processing and transmission of complex signals.

[0053] This invention features detection and protection capabilities to ensure the safe operation of the television set. The built-in voltage and current monitoring system tracks the circuit status in real time and takes immediate protective measures when abnormal voltage or current is detected. This preventative design significantly reduces the risk of circuit failure and extends the lifespan of the equipment.

[0054] This utility model employs the above technical solution to detect and protect against voltage and current anomalies that may occur during AC power outages and standby states. It uses voltage and current detection units to detect voltage and current changes in the T5 circuit in real time with high precision. Through the switching elements of the protection execution unit connected in series or parallel in the T5 circuit, it reacts rapidly to protect circuit components when transient anomalies occur in the television. The detection device adopts a highly integrated structure, with compact circuit units that are easy to integrate into the television without affecting the original circuit layout. It features a highly reliable housing made of high-quality materials and an optimized structural design to ensure the stability of the detection device under different operating conditions.

[0055] Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Without conflict, the embodiments and features in the embodiments of this application can be combined with each other. The components of the embodiments of this application described and illustrated herein can generally be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A detection and protection device for a T5 line under dual power failure conditions, characterized in that: It includes a processor unit and voltage detection unit, current detection unit, power management unit, and protection execution unit connected to the processor unit. The voltage detection unit is connected in parallel across the positive and negative terminals of the T5 line to detect voltage; the current detection unit is connected in series in the T5 line to measure current; the power management unit is connected to both the processor unit and the protection execution unit and provides a stable operating voltage for both; the processor unit receives and processes voltage and current data and controls the on / off protection actions of the protection execution unit; the protection execution unit includes a switching element and a drive circuit. The drive circuit is connected to the processor unit, and its output is connected to the switching element. The switching element is connected in series or parallel in the T5 line to achieve rapid disconnection or impedance adjustment of the T5 line and protect the circuit safety.

2. The detection and protection device for the T5 line under double power failure conditions according to claim 1, characterized in that: The voltage detection unit includes a high-precision voltage sensor, a signal conditioning circuit, and a voltage processing unit. The high-precision voltage sensor is connected in parallel to the positive and negative terminals of the T5 line. The input terminal of the voltage signal conditioning circuit is connected to the high-precision voltage sensor, and the voltage signal conditioning circuit is used to amplify and filter the signal detected by the high-precision voltage sensor. The output terminal of the voltage signal conditioning circuit is connected to the voltage processing unit, which is used to process and transmit the conditioned signal. The output terminal of the voltage processing unit is connected to the processor unit.

3. The detection and protection device for the T5 line under double power failure conditions according to claim 1, characterized in that: The current detection unit includes a current sampling resistor, an operational amplifier, and a current signal conditioning circuit. The current sampling resistor is connected in series in the T5 circuit. The input of the operational amplifier is connected to the sampling resistor. The operational amplifier is used to amplify and condition the current signal from the sampling resistor. The output of the operational amplifier is connected to the processor unit.

4. The detection and protection device for the T5 line under double power failure conditions according to claim 1, characterized in that: The processor unit includes a microcontroller, a first signal conditioning circuit, an analog-to-digital converter (ADC), and a comparator. A voltage detection unit and a current detection unit are respectively connected to the first signal conditioning circuit, which is used to condition the input signal. The output of the first signal conditioning circuit is connected to the ADC, which converts analog signals into digital signals. The output of the ADC is connected to the microcontroller. The microcontroller performs data processing and logical judgments. The output of the microcontroller is connected to the comparator. The output of the comparator is connected to the protection execution unit.

5. The detection and protection device for the T5 line under double power failure conditions according to claim 1, characterized in that: The switching elements and drive circuitry for the protection actuator are integrated on a small circuit board; the fast-response switching elements include MOSFETs, relays, IGBTs, or thyristors.

6. The detection and protection device for the T5 line under double power failure conditions according to claim 1, characterized in that: The power management unit includes a voltage regulator, a filter, and a power isolation circuit. The input of the voltage regulator is connected to the main power supply of the TV, and the output of the voltage regulator is connected to the filter and the power isolation circuit in sequence. The power isolation circuit prevents power noise from interfering with signal processing.

7. The detection and protection device for the T5 line under double power failure conditions according to claim 1, characterized in that: It also includes a housing for accommodating the various circuit units, which is made of high-strength and insulating flame-retardant material and is in the shape of a flat cuboid.

8. The detection and protection device for the T5 line under double power failure conditions according to claim 7, characterized in that: The casing is equipped with a pluggable interface, and the detection and protection device of the T5 line and the TV motherboard can be quickly installed and removed through the pluggable interface under dual power failure conditions; the casing is equipped with heat sinks or some areas of the casing are made of thermally conductive material.

9. The detection and protection device for the T5 line under double power failure conditions according to claim 1, characterized in that: The processor unit, voltage detection unit, current detection unit, power management unit, and protection execution unit use independent circuit boards.

10. The detection and protection device for the T5 line under double power failure conditions according to claim 1, characterized in that: It also includes a wireless communication unit connected to the processor unit; the wireless communication unit includes a wireless receiver and an antenna, the wireless receiver being connected to the processor unit and the antenna respectively, and the processor unit being connected to the device through the wireless communication unit.

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