POE power supply wired simultaneous interpretation digital device

Abstract

The application relates to a POE power supply wired simultaneous interpretation digital device, which comprises a POE power supply device, a host and at least one simultaneous interpretation digital microphone connected with the POE power supply device and the host through network cables respectively, the POE power supply device and the host are used for providing first power supply, the simultaneous interpretation digital microphone comprises a network transformer connected with the POE power supply device and the host through network cables respectively, the network transformer is used for data exchange with the POE power supply device and the host; a power supply controller is used for converting the first power supply provided by the network transformer to obtain second power supply for powering the simultaneous interpretation digital microphone. The device is connected with the simultaneous interpretation digital microphone through network cables of the POE power supply device and the host for power supply, the network cables are used for simultaneously transmitting data and power supply, remote transmission is realized, an additional power supply cable is not needed, wiring work is simplified, and the cost and time required for installing power supply and material cost are saved.

Description

Technical Field

[0001] This application relates to the field of audio and video equipment technology, and in particular to a PoE-powered wired simultaneous interpretation digital device. Background Technology

[0002] Frequent conferences have become an important way to promote communication and cooperation among participants. In these conferences, simultaneous interpretation microphones, as a crucial translation method, enable real-time translation between multiple languages, ensuring that participants can accurately understand the content of speeches. In recent years, the power supply methods for simultaneous interpretation microphones on the market have mostly relied on phantom power, low-voltage DC power, or centralized power supply from the system host – all single power supply methods. Most phantom power supplies on the market are 48V 20mA, and the quality of the power supply depends entirely on the power supply equipment. Inexpensive equipment may provide unclean, noisy, or unstable phantom power.

[0003] Simultaneous interpretation microphones use low-voltage DC power, resulting in significant transmission losses over long distances. To reduce resistance and cope with losses caused by high current, thicker and more expensive wires must be used for low-voltage, high-current transmission, undoubtedly increasing wiring and material costs. Simultaneous interpretation microphones use centralized power supply from the system host, requiring dedicated cabling. While this allows for longer transmission distances than ordinary low-voltage DC, distance limitations still exist. DC power experiences voltage drop over long distances, potentially leading to insufficient power supply to the end-user microphones. Typically, the distance from the host to the furthest microphone is less than 100 meters. Furthermore, the power supply components are numerous, resulting in high hardware costs and inconvenient maintenance.

[0004] As mentioned above, existing simultaneous interpretation microphones use a single power supply method. If the power supply fails during use, the device cannot be used immediately. Utility Model Content

[0005] This application provides a PoE-powered wired digital simultaneous interpretation device to solve the technical problems of existing simultaneous interpretation microphones, which use a single power supply method and have a complex power circuit structure, resulting in high hardware costs and the inability to use the device if the power supply is damaged.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A PoE-powered wired simultaneous interpretation digital device is provided, comprising a PoE power supply device, a host computer, and at least one simultaneous interpretation digital microphone connected to the PoE power supply device and the host computer respectively via a network cable. Both the PoE power supply device and the host computer are used to provide a first power supply. The simultaneous interpretation digital microphone includes:

[0008] A network transformer is connected to the PoE power supply equipment and the host respectively via a network cable. The network transformer is used for data exchange with the PoE power supply equipment and the host.

[0009] A power controller, connected to the network transformer and the host, is used to convert the first power supplied by the network transformer to obtain a second power supply for powering the simultaneous interpretation digital microphone.

[0010] Optionally, the power controller includes a first rectifier module, a second rectifier module, a security authentication module, a PoE chip, a drive switch, and a voltage conversion module. The first rectifier module is connected to the network transformer, the second rectifier module is connected to the host, and both the first and second rectifier modules are connected to the security authentication module. The input terminals of the security authentication module, the drive switch, and the voltage conversion module are all connected to the PoE chip. The drive switch is also connected to the input terminal of the voltage conversion module, and the output terminal of the voltage conversion module is connected to the simultaneous interpretation digital microphone.

[0011] Optionally, the security authentication module includes a detection resistor, the first end of which is connected to the fourth pin of the POE chip, and the second end of which is grounded; the security authentication module is used to determine whether the power supply to the POE power supply device connected to the simultaneous interpretation digital microphone is legitimate based on the voltage value of the detection resistor.

[0012] Optionally, the driving switch is a switching transistor, the first end of which is connected to the sixteenth pin of the POE chip, the second end of which is connected to the input of the voltage conversion module, and the third end of which is connected to the fifteenth pin of the POE chip through the twelfth resistor.

[0013] Optionally, the voltage conversion module includes a transformer, the first output terminal of the transformer outputs a second power supply through a second filter capacitor, and the second output terminal of the transformer is also grounded through a lightning protection unit.

[0014] Optionally, the lightning protection unit includes a sixth diode, a sixth capacitor, and a sixth resistor. The cathode of the sixth diode and the first terminal of the sixth capacitor are both connected to the second output terminal of the transformer. The anode of the sixth diode and the second terminal of the sixth resistor are both grounded. The second terminal of the sixth capacitor and the first terminal of the sixth resistor are connected.

[0015] Optionally, the voltage conversion module further includes a protection unit for protecting the transformer from voltage surges, spikes, or reverse voltage damage. The protection unit is connected to the input terminal of the transformer and includes a third Zener diode, a first capacitor, and a first resistor. The anode of the third Zener diode is connected to the fifth input terminal of the transformer, and the cathode of the third Zener diode is connected to the second terminal of the first resistor and the second terminal of the first capacitor, respectively. The first terminal of the first resistor and the first terminal of the first capacitor are both connected to the third input terminal of the transformer.

[0016] Optionally, the power controller further includes a protection element for protecting the POE chip, wherein the second end of the protection element is connected to the fourth pin of the POE chip, and the first end of the protection element is grounded.

[0017] Optionally, the power controller further includes a display element for displaying the working status of the simultaneous interpretation digital microphone, wherein a first end of the display element is connected to the nineteenth pin of the POE chip, and a second end of the display element is grounded.

[0018] Optionally, the power controller further includes a display element for displaying the working status of the simultaneous interpretation digital microphone, wherein a first end of the display element is connected to the nineteenth pin of the POE chip, and a second end of the display element is grounded.

[0019] The PoE-powered wired simultaneous interpretation digital device includes a PoE power supply, a host computer, and at least one simultaneous interpretation digital microphone connected to both the PoE power supply and the host computer via network cables. Both the PoE power supply and the host computer provide a first power source. The simultaneous interpretation digital microphone includes: a network transformer connected to both the PoE power supply and the host computer via network cables, used for data exchange with both the PoE power supply and the host computer; and a power controller connected to the network transformer, used to convert the first power source provided by the network transformer to obtain a second power source for powering the simultaneous interpretation digital microphone.

[0020] As can be seen from the above technical solutions, this application has the following advantages: The POE-powered wired simultaneous interpretation digital device is powered by connecting the POE power supply equipment and the host to the simultaneous interpretation digital microphone via network cables, allowing the network cable to transmit data and power simultaneously, achieving long-distance transmission without the need for additional power cables. This simplifies the wiring work, saves the cost, time, and material costs required for power supply installation, and solves the technical problems of existing simultaneous interpretation microphones using a single power supply method and having a complex power circuit structure, resulting in high hardware costs and the inability to use the device if the power supply is damaged. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A connection diagram of the POE-powered wired simultaneous interpretation digital device according to an embodiment of this application;

[0023] Figure 2 A schematic diagram of the frame of the simultaneous interpretation digital microphone in the POE-powered wired simultaneous interpretation digital device described in this application embodiment;

[0024] Figure 3 This is a circuit diagram of the simultaneous interpretation digital microphone in the POE-powered wired simultaneous interpretation digital device described in this application embodiment. Detailed Implementation

[0025] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of the embodiments of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] In the embodiments of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0029] PoE (Power Over Ethernet) refers to a technology that, without any changes to the existing Ethernet Cat.5 cabling infrastructure, can simultaneously transmit data signals to some IP-based terminals (such as IP phones, wireless LAN access points, network cameras, etc.) and provide DC power to such devices.

[0030] This application provides a PoE-powered wired simultaneous interpretation digital device, which solves the technical problems of existing simultaneous interpretation microphones that use a single power supply method and have a complex power circuit structure, resulting in high hardware costs and the inability to use the device if the power supply is damaged.

[0031] Figure 1 This is a connection diagram of the POE-powered wired simultaneous interpretation digital device described in an embodiment of this application. Figure 2 This is a schematic diagram of the frame of the simultaneous interpretation digital microphone in the POE-powered wired simultaneous interpretation digital device described in this application embodiment.

[0032] like Figure 1 As shown, this application provides a PoE-powered wired simultaneous interpretation digital device, including a PoE power supply device 10, a host 20, and at least one simultaneous interpretation digital microphone 30 connected to the PoE power supply device 10 and the host 20 respectively via a network cable. Both the PoE power supply device 10 and the host 20 are used to provide a first power supply.

[0033] It should be noted that the primary power supply can be a 48V DC power supply. The network cable can be a standard Cat5e / 6 / 6a network cable. The PoE power supply device 10 can be a PoE switch. The host 20 can be a computer, industrial control computer, etc. Both the PoE power supply device 10 and the host 20 can power the simultaneous interpretation digital microphone 30 via the network cable. For example, the PoE power supply device 10 is the power supplier, responsible for injecting DC voltage into the network cable; it is a PSE device. The simultaneous interpretation microphone is the power receiver, belonging to the PD device category. The host 20 is the power supplier. When the PoE power supply device 1 cannot provide power to the simultaneous interpretation digital microphone 30 normally, it can be connected to the host 20 to power the simultaneous interpretation digital microphone 30. When the host 20 directly supplies power, it does not need to detect the type of device being powered; it can be directly connected to power the simultaneous interpretation digital microphone 30. In this embodiment, the PoE-powered wired simultaneous interpretation digital device implements PoE power supply through PoE power supply device 10, transmitting power via network. This simplifies the circuit structure, reduces the number of components, significantly lowers hardware costs, and improves the reliability and maintenance convenience of the PoE-powered wired simultaneous interpretation digital device. It also solves the problems of complex circuit structure and high hardware cost of traditional simultaneous interpretation digital microphone power supplies. Specifically, this PoE-powered wired simultaneous interpretation digital device uses both PoE power supply technology and host power supply to supply power to the simultaneous interpretation digital microphone 30 through PoE power supply device 10 and host power supply 20. When one power supply method fails, the device can be quickly switched (e.g., PoE power supply device 10 and host 20). This PoE-powered wired simultaneous interpretation digital device connects to the simultaneous interpretation digital microphone 30 via a standard Cat5e / 6 / 6a network cable through the PoE power supply device 10 and the host unit 20. The network cable is inexpensive, thin, and easy to lay, offering multiple uses with a single cable. This solves both power and data transmission issues, greatly simplifying cabling, reducing material and labor costs, and resolving the problem of dedicated lines. In this embodiment, the PoE-powered wired simultaneous interpretation digital device can support PoE power supply to the simultaneous interpretation digital microphone 30 through the PoE power supply device 10 and the host unit 20, or the host unit can directly power it, making it compatible with any standard PoE device on the market.

[0034] Understandably, this PoE-powered wired simultaneous interpretation digital device connects to at least one simultaneous interpretation digital microphone via network cables through the PoE power supply equipment and the host, forming a distributed wired simultaneous interpretation system based on the IEEE 802.3af / at / bt standard PoE (Power over Ethernet) technology. For example, the PoE power supply equipment 10 acts as a centralized power source, supplying 48V DC power and data signals to the simultaneous interpretation digital microphone 30 via a standard Ethernet cable (Cat5e / Cat6), conforming to the PoE++ (IEEE 802.3bt) specification, with a maximum single-port output power of 90W, supporting parallel power supply for multiple devices. The host 20 connects to the PoE power supply equipment 10 and the simultaneous interpretation digital microphone 30 via network cables, realizing power distribution, audio signal encoding / decoding (such as G.711 / G.722), and synchronous transmission control. The simultaneous interpretation digital microphone 30 features a built-in omnidirectional / directional microphone array, audio ADC (analog-to-digital converter), and PoE power receiving module (PD). It enables bidirectional power supply and data transmission via a single network cable, supports multi-channel audio acquisition (e.g., 8 channels), and low-latency (≤10ms) transmission.

[0035] In this embodiment, both the PoE power supply device 10 and the host 20 include multiple PoE switching network interfaces connected to a network cable.

[0036] It should be noted that this PoE-powered wired simultaneous interpretation digital device connects to multiple simultaneous interpretation digital microphones 30 via multiple PoE-powered wired simultaneous interpretation digital devices. Essentially, this PoE-powered wired simultaneous interpretation digital device can be used simply by plugging it into the simultaneous interpretation digital microphone 30 through the PoE switching network interface of the PoE power supply device 10. Adding, removing, and relocating the simultaneous interpretation digital microphones 30 is very convenient, making it ideal for conference rooms where layouts frequently need to be changed, thus reducing wiring and material costs. Furthermore, this PoE-powered wired simultaneous interpretation digital device uses a network cable to achieve PoE power supply through the PoE power supply device 10 and the host 20, meeting the requirements for long-distance power transmission. Adhering to the PoE standard, the power supply distance can reach up to 100 meters, making it ideal for large venues. The simultaneous interpretation digital microphones 30 can be deployed far from the host 20, solving the distance limitation problem. In this embodiment, the PoE-powered wired simultaneous interpretation digital device uses a PoE switching network interface connected to the simultaneous interpretation digital microphone 30. This simplifies wiring, uses standard network cables, is low-cost, plug-and-play, and is easy to expand and move.

[0037] like Figure 1 As shown in the embodiment of this application, the POE-powered wired simultaneous interpretation digital device further includes a PC control terminal 40 connected to the POE power supply device 10.

[0038] It should be noted that the PC control terminal 40 is used to monitor the power supply status of the PoE power supply device 10. The PC control terminal 40 can be selected as a computer, tablet, industrial computer, etc. This PoE-powered wired simultaneous interpretation digital device can centrally manage all simultaneous interpretation digital microphones 30 through the PC control terminal 40. It supports remote supervision and control via a simple network management protocol, and supports functions such as remote restart, timed on / off, and power detection, making operation and maintenance very convenient. It can also remotely monitor the power supply status of each PoE switching network interface of the PoE power supply device 10, and realize remote restart, power off, and shutdown management functions for the simultaneous interpretation digital microphones 30, which facilitates maintenance and fault diagnosis.

[0039] like Figure 1 As shown in this embodiment, each simultaneous interpretation digital microphone 30 is connected to each PoE switching network interface of the PoE power supply device 10, which can directly connect to the simultaneous interpretation digital microphone 30 for data exchange, transmission and power supply. At the same time, the host 20 and the PC control terminal 40 are also connected to the PoE power supply device 10 to control the simultaneous interpretation digital microphone 30.

[0040] like Figure 2 As shown in this embodiment, the simultaneous interpretation digital microphone 30 includes a network transformer 31 and a power controller 32. The network transformer 31 is connected to the PoE power supply device 10 and the host 20 via a network cable, and is used for data exchange with the PoE power supply device 10 and the host 20. The power controller 32 is connected to the network transformer 31, and is used to convert the first power supplied by the network transformer 31 to obtain a second power supply for powering the simultaneous interpretation digital microphone 30.

[0041] It should be noted that the second power supply can be 12V DC. The network transformer 31 includes a HY60 series network transformer chip U4. One end of the network cable connects to the PoE switching network interface of the PoE power supply device 10, and the other end connects to pins 9, 11, 14, and 16 of the network transformer chip U4. The network transformer chip U4 is used for data exchange and transmission with the PoE power supply device 10 via the network cable. Pins 10 and 15 of the network transformer chip U4 serve as the center taps of the network transformer and are connected to the input terminals of the power controller 32. The power controller 32 receives the PoE standard DC power (e.g., DC 48V ± 5%) output from the network transformer 31 and converts it to the stable voltage (e.g., DC 12V / 5V) required by the simultaneous interpretation digital microphone 30, allowing the simultaneous interpretation digital microphone 30 to support a wide input voltage range (36V-57V) and adapt to the output characteristics of different PoE power supply devices.

[0042] Understandably, in the simultaneous interpretation digital microphone 30, the simultaneous interpretation digital microphone 30 is connected to the PoE switching network interface of the PoE power supply device 10 via a network transformer 31 using a network cable to receive a composite signal containing power and data. Alternatively, it can be connected to the PoE switching network interface of the host 10 via a network cable to receive a composite signal containing power and data or a data signal (excluding power). Then, the input terminal of the power controller 32 is connected to the PoE power output pin (usually the center tap) of the network transformer 31, and the output terminal of the power controller 32 is connected to the power interface of the simultaneous interpretation digital microphone 30 via a wire.

[0043] In this embodiment, the PoE-powered wired simultaneous interpretation digital device is connected to the simultaneous interpretation digital microphone 30 via a network cable through the PoE power supply device 10 and the host 20. The network cable is dual-purpose (data and power), transmitting data and power simultaneously while being compatible with the host powering it, enabling long-distance transmission without the need for an additional power cable, thus simplifying the wiring work and saving the cost, time, and material costs required for power supply installation.

[0044] It should be noted that the network cable can also be a standard Ethernet cable. This PoE-powered wired simultaneous interpretation digital device can remotely monitor and manage the power of multiple simultaneous interpretation digital microphones 30 through the PC control terminal 40, and centrally control them without the need for personnel to go to the site to unplug and plug in the power.

[0045] This application provides a PoE-powered wired digital simultaneous interpretation device, comprising a PoE power supply unit, a host computer, and at least one digital simultaneous interpretation microphone connected to both the PoE power supply unit and the host computer via network cables. Both the PoE power supply unit and the host computer provide a first power source. The digital simultaneous interpretation microphone includes: a network transformer connected to both the PoE power supply unit and the host computer via network cables for data exchange; and a power controller connected to the network transformer for converting the first power source provided by the network transformer to obtain a second power source for powering the digital simultaneous interpretation microphone. This PoE-powered wired digital simultaneous interpretation device supplies power to the microphone via separate network cable connections to the PoE power supply unit and the host computer, allowing the network cable to transmit both data and power simultaneously, enabling long-distance transmission without the need for additional power cables. This simplifies wiring, saves on installation costs, time, and materials, and solves the technical problems of existing simultaneous interpretation microphones using a single power supply method and complex power circuit structures, resulting in high hardware costs and the inability to use the microphone if the power supply fails.

[0046] Figure 3 This is a circuit diagram of the simultaneous interpretation digital microphone in the POE-powered wired simultaneous interpretation digital device described in this application embodiment.

[0047] like Figure 3 As shown in this embodiment, the power controller 32 includes a first rectifier module, a second rectifier module, a security authentication module, a PoE chip U5, a drive switch Q1, and a voltage conversion module. The first rectifier module is connected to the network transformer 31, the second rectifier module is connected to the host 20, and both the first and second rectifier modules are connected to the security authentication module. The input terminals of the security authentication module, the drive switch, and the voltage conversion module are all connected to the PoE chip U5. The drive switch Q1 is also connected to the input terminal of the voltage conversion module, and the output terminal of the voltage conversion module is connected to the simultaneous interpretation digital microphone 30.

[0048] It should be noted that the power controller 32, based on the network transformer output signal rectified by the first rectifier module and the first power supplied by the PoE power supply device 10 or the host 20, further rectifies it using the second rectifier module. If the PoE power supply device 10 providing the first power supply passes the security authentication module, the rectified power supply outputs a control signal through the PoE chip U5 to control the drive switch Q1 to turn on. The rectified power supply then undergoes a step-down process in the input voltage conversion module to obtain a second power supply sufficient for the simultaneous interpretation digital microphone 30. The PoE chip U5 is used at the receiving end of the Ethernet power supply device. It is responsible for "communicating" with the power supply device at the other end of the network, completing device detection, classification, and connection establishment. It also integrates a DC-DC controller to provide stable secondary power conversion.

[0049] Understandably, when the PoE power supply device 10 is supplying power normally, the power controller 32 works by connecting the first rectifier module to the PoE power output terminal of the network transformer 31 to perform full-wave rectification on the input AC component (if present), outputting pulsating DC power. The second rectifier module is independently connected to an external first power source (such as a backup DC power source provided by the host), using synchronous rectification technology to improve efficiency and output stable DC power. Then, the security authentication module verifies whether the input first power source is valid. Only valid power sources are input into the PoE chip U5 for internal processing. After the second pin of the PoE chip U5 is connected to the control drive switch Q1 to turn on the output power, it is output through the voltage conversion module to the voltage required by the simultaneous interpretation digital microphone 30. When the PoE power supply device 10 is damaged, the host 20 can be connected to supply power to the simultaneous interpretation digital microphone 30. The host 20 receives a DC +48V input, which is directly rectified by the second rectifier module via a network cable. The rectified power is then directly input to pin 4 of the PoE chip U5. After processing by the PoE chip U5, the output power is switched on via pin 2 of the PoE chip U5 and controlled by the drive switch Q1. The output voltage is then converted by the voltage conversion module to provide the voltage required by the simultaneous interpretation digital microphone 30. The host 20's direct power supply requires no testing, and the PoE chip U5 supports a wide voltage input range of 37V-57V.

[0050] like Figure 3 As shown in the embodiments of this application, the first rectifier module includes a rectifier bridge D1. The first end of the rectifier bridge D1 is connected in series with a first inductor L1 and is connected to the tenth pin 10 of the network transformer chip U4. The third end of the rectifier bridge D1 is connected in series with a second inductor L2 and is connected to the fifteenth pin 15 of the network transformer chip U4. The fourth end of the rectifier bridge D1 is grounded. The second end of the rectifier bridge D1 is connected to the fourth pin 4 of the security authentication module and the PoE chip U5, respectively. The second rectifier module includes a rectifier bridge D20. The first and third ends of the rectifier bridge D20 are connected to the host 20, respectively. The fourth end of the rectifier bridge D20 is grounded. The second end of the rectifier bridge D20 is connected to the fourth pin 4 of the security authentication module and the PoE chip U5, respectively.

[0051] like Figure 3 As shown, in one embodiment of this application, the security authentication module includes a detection resistor R2. The first end of the detection resistor R2 is connected to the fourth pin connection terminal 4 of the POE chip U5, and the second end of the detection resistor R2 is grounded. The security authentication module is used to determine whether the power supply of the POE power supply device 10 connected to the simultaneous interpretation digital microphone 30 is legitimate based on the voltage value of the detection resistor R2.

[0052] It should be noted that the legal voltage range is 19kΩ~26.5kΩ. This PoE-powered wired simultaneous interpretation digital device verifies the legality of the power supply from the PoE power supply device 10 through a safety authentication module to avoid damage to the PSE or PD equipment. The safety authentication module can be understood as follows: the output current of the PoE power supply device 10 flows through the detection resistor R2, generating a voltage drop V_R2. This voltage V_R2 enters the internal circuit of the PoE chip U5 through the fourth pin connection terminal 4. The voltage V_R2 is compared with a preset threshold. If it exceeds the preset threshold, the power supply is illegal, and the PoE chip U5 outputs a low-level signal to the drive switch Q1, thus disconnecting the power supply circuit between the first or second rectifier module and the voltage conversion module. If it does not exceed the preset threshold, the power supply is legal, and the PoE chip U5 outputs a high-level signal to the drive switch Q1, thus connecting the power supply circuit between the first or second rectifier module and the voltage conversion module. This PoE-powered wired digital simultaneous interpretation device uses a security authentication module to prevent the simultaneous interpretation digital microphone 30 from being damaged by overheating due to overcurrent, thus extending its service life; it also prevents malicious devices from damaging the simultaneous interpretation digital microphone 30 through high voltage / high current, thereby improving security.

[0053] like Figure 3 As shown, in one embodiment of this application, the driving switch Q1 is a switching transistor. The first end of the switching transistor is connected to the sixteenth pin of the POE chip U5, the second end of the switching transistor is connected to the input of the voltage conversion module, and the third end of the switching transistor is connected to the fifteenth pin of the POE chip U5 through the twelfth resistor.

[0054] It should be noted that the switching transistor can be a MOSFET, a transistor, or other power switching transistor, mainly used for safe conduction circuits and electrical isolation. If the switching transistor is a MOSFET, the gate of the MOSFET is the first terminal 1, the source of the MOSFET is the second terminal 2, and the drain of the MOSFET is the third terminal 3. In this embodiment, only after all detections confirm that the power supply is safe, the power controller 32 outputs a high-level signal at the sixteenth pin 16 of the POE chip U5, causing the drive switch Q1 to close, smoothly delivering the 48V first power supply to the voltage conversion module inside the power controller 32. Before circuit detection, it can effectively isolate the downstream circuit, preventing unstable states from affecting the identification of the power supply equipment, thereby protecting the entire startup process of the POE-powered wired simultaneous interpretation digital device.

[0055] Understandably, the gate of drive switch Q1 is directly connected to pin 16 of POE chip U5, receiving the PWM drive signal (such as high / low level signals) output by POE chip U5 to control the on / off state of drive switch Q1. The drain of drive switch Q1 is connected to the input of voltage conversion module (such as DC-DC converter) to realize the on / off control of POE power supply. The source of drive switch Q1 is connected to pin 15 of POE chip U5 through resistor R12 (the resistance value needs to be selected according to the current detection accuracy, such as 10kΩ), forming a current feedback loop for POE chip U5 to monitor the load current and implement protection. For example, when drive switch Q is on, the load current I_LOAD flows through drive switch QR12, generating a voltage drop V_R12 = I_LOAD × R12; POE chip U5 indirectly obtains the load current by detecting V_R12, and if it exceeds the threshold (such as 0.5V), it triggers overcurrent protection.

[0056] like Figure 3 As shown, in one embodiment of this application, the voltage conversion module includes a transformer T1. The first output terminal of the transformer T1 outputs a second power supply through a second filter capacitor E2. The second output terminal of the transformer T1 is also grounded through a lightning protection unit. The lightning protection unit includes a sixth diode D6, a sixth capacitor C6, and a sixth resistor R6. The cathode of the sixth diode D6 and the first terminal of the sixth capacitor C6 are both connected to the second output terminal of the transformer T1. The anode of the sixth diode D6 and the second terminal of the sixth resistor R6 are both grounded. The second terminal of the sixth capacitor C6 and the first terminal of the sixth resistor R6 are connected.

[0057] It should be noted that the second power supply can be selected as 12V DC. The third terminal of the drive switch Q1 is connected to the fifth input terminal 5 of the transformer T1. The working principle of the voltage conversion module is to use the transformer T1 to convert the input 48V to 12V power output. The first output terminals 6 and 7 of the transformer T1 output the second power supply (e.g., 12V) through the second filter capacitor E2 (the capacitance needs to be selected according to the output ripple requirements, such as 100μF / 25V), which is used to provide a stable DC voltage for the simultaneous interpretation digital microphone 30. The second output terminal of the transformer T1 is connected to the lightning protection unit. This lightning protection unit consists of the sixth diode D6 (the model must meet the reverse breakdown voltage ≥100V, such as 1N4007), the sixth capacitor C6 (capacity 0.1μF / 100V), and the sixth resistor R6 (resistance 1MΩ±5%), which protects the simultaneous interpretation digital microphone 30 from lightning strikes or electrostatic interference.

[0058] like Figure 3As shown in this embodiment, the voltage conversion module further includes a protection unit for protecting the transformer T1 from voltage surges, spike interference, or reverse voltage damage. The protection unit is connected to the input terminal of the transformer T1 and includes a third Zener diode D3, a first capacitor C1, and a first resistor R1. The anode of the third Zener diode D3 is connected to the fifth input terminal 5 of the transformer T1, and the cathode of the third Zener diode D3 is connected to the second terminal of the first resistor R1 and the second terminal of the first capacitor C1, respectively. The first terminal of the first resistor R1 and the first terminal of the first capacitor C1 are both connected to the third input terminal 3 of the transformer T3.

[0059] It should be noted that the protection unit is used to protect transformers (such as network transformers or power transformers) from damage caused by abnormal operating conditions such as voltage surges, spike interference, or reverse voltage. Specifically, the first resistor R1 is used to limit the current through the first capacitor C1 or the third Zener diode D3, preventing excessive current from being generated when the capacitor is charging or the Zener diode breaks down, thereby protecting the windings of transformer T1 and subsequent circuits. For example, when the first capacitor C1 is charging, the first resistor R1 limits the transient current, preventing voltage spikes in the primary winding of transformer T1 due to sudden current changes. When the third Zener diode D3 is conducting, the first resistor R1 limits the reverse current, preventing damage to the windings of transformer T1 due to reverse voltage. The first capacitor C1 is used to absorb high-frequency noise or voltage spikes in the primary winding of transformer T1, smoothing the voltage waveform. The first capacitor C1 can absorb the voltage spike when the drive switch Q1 is turned off, reducing the voltage stress on the windings of transformer T1. In other embodiments, if more comprehensive protection is required, a TVS diode (transient voltage suppressor diode) or a varistor (MOV) connected in parallel with the resistor can be added and used in combination with the first resistor R1, the first capacitor C1 and the third Zener diode D3.

[0060] like Figure 3 As shown, in one embodiment of this application, the power controller further includes a protection element D2 for protecting the POE chip U5. The second end of the protection element D2 is connected to the fourth pin connection terminal 4 of the POE chip U5, and the first end of the protection element D2 is grounded.

[0061] It should be noted that the protection element can be a transient diode, with the cathode of the transient diode serving as the second terminal of the protection element D2, and the anode of the transient diode serving as the first terminal of the protection element D2. When a short circuit occurs in the power controller 32, the power controller breaks down to ground, thus protecting the PoE chip U5.

[0062] In this embodiment, the fourth pin of the POE chip U5 is grounded through the second filter capacitor C2. The eighth pin of the POE chip U5 is grounded through the fifth filter capacitor C5. The power setting of the tenth pin of the POE chip U5 is set through the seventh resistor R7. The fourteenth pin of the POE chip U5 is the chip soft-start pin, and it must be grounded through the eleventh capacitor C11. The fifteenth pin of the POE chip U5 is the current detection pin. After being filtered by the twelfth resistor R12 and the twelfth capacitor C12, the current is limited by the fifteenth capacitor R15 and the sixteenth resistor R16 before being connected to the N-channel MOSFET drive switch Q1 and finally to the fifth input terminal of the transformer T1. The sixteenth pin of the POE chip U5 is the NDRV control signal, which is connected to the first terminal of the drive switch Q1 to detect the primary current of the transformer T1. Pin 17 of the POE chip U5 is connected to the seventh capacitor C7 to achieve power supply decoupling. Pin 18 of the POE chip U5 is connected to the fifth resistor R5 for setting the chip switching frequency. Pin 2 of the POE chip U5 is the chip power output pin. Pin 2 of the POE chip U5 is also grounded through the first filter capacitor E1 and the third filter capacitor C3.

[0063] like Figure 3 As shown, in one embodiment of this application, the power controller 32 further includes a display element for displaying the working status of the simultaneous interpretation digital microphone. The first end of the display element is connected to the nineteenth pin of the POE chip U5, and the second end of the display element is grounded.

[0064] It should be noted that the display element can be an LED. Pin 19 of the POE chip U5 is connected to the display element LED1 through the fourth resistor R4. The display element LED1 is the chip's working indicator.

[0065] like Figure 2 and Figure 3 As shown, in one embodiment of this application, the simultaneous interpretation digital microphone also includes a signal converter 33 connected to the network transformer 31, which is used to convert digital signals to analog signals.

[0066] It should be noted that signal converter 33 includes network chip U10 of the RTL8 series. Network transformer chip U4's pins 1, 3, 6, and 8 are connected to network chip U10's pins 2-5 for data exchange and transmission. The center taps of network transformer chip U4's transformer, pins 2 and 7, are connected to decoupling capacitors (C27, C30). Network chip U10 requires both +1V and +3.3V power supplies. Pin 30 is the chip's operating indicator light. Pins 30 and 40 of network chip U10 are crystal oscillator pins, connected to crystal oscillator Y1 to provide a stable operating frequency for the chip. Capacitors C29 and C33 filter out crystal oscillator noise frequencies across crystal oscillator Y1.

[0067] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A PoE-powered wired simultaneous interpretation digital device, characterized in that, The system includes a PoE power supply, a host computer, and at least one simultaneous interpretation digital microphone connected to both the PoE power supply and the host computer via network cables. Both the PoE power supply and the host computer provide a first power source. The simultaneous interpretation digital microphone includes: A network transformer is connected to the PoE power supply equipment and the host respectively via a network cable. The network transformer is used for data exchange with the PoE power supply equipment and the host. A power controller, connected to the network transformer and the host, is used to convert the first power supplied by the network transformer to obtain a second power supply for powering the simultaneous interpretation digital microphone.

2. The PoE-powered wired simultaneous interpretation digital device according to claim 1, characterized in that, The power controller includes a first rectifier module, a second rectifier module, a security authentication module, a PoE chip, a drive switch, and a voltage conversion module. The first rectifier module is connected to the network transformer, the second rectifier module is connected to the host, and both the first and second rectifier modules are connected to the security authentication module. The input terminals of the security authentication module, the drive switch, and the voltage conversion module are all connected to the PoE chip. The drive switch is also connected to the input terminal of the voltage conversion module, and the output terminal of the voltage conversion module is connected to the simultaneous interpretation digital microphone.

3. The PoE-powered wired simultaneous interpretation digital device according to claim 2, characterized in that, The security authentication module includes a detection resistor, the first end of which is connected to the fourth pin of the POE chip, and the second end of which is grounded. The security authentication module is used to determine whether the power supply to the POE power supply device connected to the simultaneous interpretation digital microphone is legitimate based on the voltage value of the detection resistor.

4. The PoE-powered wired simultaneous interpretation digital device according to claim 2, characterized in that, The driving switch is a switching transistor. The first end of the switching transistor is connected to the sixteenth pin of the POE chip, the second end of the switching transistor is connected to the input of the voltage conversion module, and the third end of the switching transistor is connected to the fifteenth pin of the POE chip through the twelfth resistor.

5. The PoE-powered wired simultaneous interpretation digital device according to claim 2, characterized in that, The voltage conversion module includes a transformer. The first output terminal of the transformer outputs a second power supply through a second filter capacitor. The second output terminal of the transformer is also grounded through a lightning protection unit.

6. The PoE-powered wired simultaneous interpretation digital device according to claim 5, characterized in that, The lightning protection unit includes a sixth diode, a sixth capacitor, and a sixth resistor. The cathode of the sixth diode and the first terminal of the sixth capacitor are both connected to the second output terminal of the transformer. The anode of the sixth diode and the second terminal of the sixth resistor are both grounded. The second terminal of the sixth capacitor and the first terminal of the sixth resistor are connected.

7. The PoE-powered wired simultaneous interpretation digital device according to claim 5, characterized in that, The voltage conversion module further includes a protection unit for protecting the transformer from voltage surges, spike interference, or reverse voltage damage. The protection unit is connected to the input terminal of the transformer and includes a third Zener diode, a first capacitor, and a first resistor. The anode of the third Zener diode is connected to the fifth input terminal of the transformer, and the cathode of the third Zener diode is connected to the second terminal of the first resistor and the second terminal of the first capacitor, respectively. The first terminal of the first resistor and the first terminal of the first capacitor are both connected to the third input terminal of the transformer.

8. The PoE-powered wired simultaneous interpretation digital device according to claim 2, characterized in that, The power controller also includes a protective element for protecting the POE chip. The second end of the protective element is connected to the fourth pin of the POE chip, and the first end of the protective element is grounded.

9. The PoE-powered wired simultaneous interpretation digital device according to claim 2, characterized in that, The power controller also includes a display element for displaying the working status of the simultaneous interpretation digital microphone. The first end of the display element is connected to the nineteenth pin of the POE chip, and the second end of the display element is grounded.

10. The PoE-powered wired simultaneous interpretation digital device according to any one of claims 1-9, characterized in that, The simultaneous interpretation digital microphone also includes a signal converter connected to the network transformer, which is used to convert digital signals to analog signals and vice versa.

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