Intelligent node management system for multiple aviation ports of conference host

Abstract

The invention relates to an intelligent node management system for multiple aviation ports of a conference host. The intelligent node management system comprises a plurality of conference microphones, a plurality of connectors, the conference host and a plurality of detection chips, the conference microphone receives speech information of a user in real time; a plurality of conference microphones are cascaded and are connected with the conference host through the connector, the conference host is provided with a plurality of aviation ports, the connector is connected with the conference host through the aviation ports, and the conference host acquires speech information of a user; each detection chip detects voltage and current at each aviation port in real time; the conference host calculates and displays the real-time load power of each aviation port according to the voltage and current of each aviation port; and meanwhile, judging whether the real-time load power of each aviation port is within a safety range, and switching to a power alarm prompt interface when the real-time load power exceeds a safety threshold. By adopting the intelligent node management system for the multiple aviation ports of the conference host, power monitoring can be carried out on the multiple aviation ports, and meanwhile, a visual function is realized for feedback.

Description

Technical Field

[0001] This invention relates to the field of power management technology for conference equipment, and in particular to an intelligent node management system for a conference host with multiple aviation ports. Background Technology

[0002] In intelligent conference systems, the conference host needs to manage and control the system systematically. Among these, the control of the conference microphones directly affects the progress of the entire conference, so it is particularly important to monitor the working status of the conference microphones.

[0003] Typically, the conference host connects to the conference microphones via an aviation port, using an "aviation-to-Ethernet" connector for power supply and data communication. However, existing intelligent node management systems suffer from high failure rates and short lifespans, especially in large-scale conference scenarios where the large number of microphones and complex wiring further exacerbate the failure rate, making engineering debugging and fault diagnosis extremely difficult. Therefore, there is an urgent need for an intelligent node management system that integrates power monitoring, visual display, and remote feedback functions. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide an intelligent node management system for a conference host with multiple air ports, which can monitor the power of multiple air ports and provide feedback through visualization, making it convenient for management and control.

[0005] A multi-aviation port intelligent node management system for a conference host includes multiple conference microphones, multiple connectors, a conference host, and multiple detection chips. The conference microphones receive user speech information in real time, converting the audio signal into an electrical signal, and continuously inputting an initial signal in electrical form. Multiple conference microphones are cascaded and connected to the conference host via the connectors. The conference host has multiple aviation ports, and the connectors connect to the conference host through these ports. The conference host acquires user speech information through the initial signal. Each detection chip is located at each aviation port and connected to it via a load bus, detecting the voltage and current at each aviation port in real time. The conference host calculates and displays the real-time load power of each aviation port based on its voltage and current. Simultaneously, the conference host determines whether the real-time load power of each aviation port is within a safe range. When the load power exceeds a safe threshold, it switches to a power alarm prompt interface to alert the user for timely action.

[0006] Furthermore, the conference host also performs deviation judgment on the real-time load power of each aviation port. When the deviation between the real-time load power detected this time and the real-time load power detected last time is greater than 1W, the real-time load power of each aviation port is sent to the outside world to realize data monitoring.

[0007] Furthermore, the detection chip includes a raw voltage register, a bus voltage register, a current register, and a calibration register; the raw voltage register stores the raw differential voltage Vshunt, in units of 2.5uV / bit; After the calibration register is set, the detection chip automatically calculates the reading current Current_Reg based on the original differential voltage Vshunt and the configured calibration register value, and stores the reading current in the current register. The current LSB is the minimum resolution of the current register, and the current LSB is calculated based on the maximum current Imax flowing through the circuit. When the maximum power supplied by the power source is Pmax, and it is evenly distributed across the four aviation ports, the maximum power carried by each aviation port is Pmax / 4. Given that the aviation port voltage is 36V, the maximum current flowing through the circuit can be calculated using I=P / U: Pmax / (4*36)V; The formula for calculating the current LSB is: Current_LSB = Imax / 2^15; The formula for calculating the calibration register value is: Cal = 0.00512 / Current_LSB*R138; Among them, 0.00512 is the fixed value in the manual for the calibration register in the detection chip; Multiply the current reading Current_Reg obtained from the current register by Current_LSB to obtain the actual current value I0; The formula for calculating the reading current Current_Reg is as follows: Current_Reg = Vshunt *Cal / 2048; Among them, 2048 is the datasheet fixed value of the current register in the INA226 chip; The VBUS of the detection chip is connected to the positive terminal of the load bus circuit to measure the current bus voltage Vbus. The current bus voltage Vbus is stored in the bus voltage register. The value read from the bus voltage register is multiplied by the bus voltage LSB = 1.25mV to obtain the actual bus voltage value U0. Here, 1.25mV is the fixed value of the bus voltage register in the detection chip according to the manual. Multiply the actual current and the actual bus voltage to obtain the real-time load power of the current aviation port: Power = U0 * I0.

[0008] Furthermore, the conference host updates the latest power values ​​of each aviation port and determines whether the power of one of the aviation ports is greater than the set safety threshold. If the power is not exceeded, the power of each aviation port is displayed normally when entering the node management page. If the power is exceeded, the conference host actively switches to the power alarm page to remind the user to handle the situation in a timely manner.

[0009] Furthermore, the load circuit of the detection chip is provided with a sampling resistor, and the resistance value of the sampling resistor is R138=10mΩ. The IN+ and IN- pins of the detection chip are respectively connected to the two ends of the sampling resistor on the load circuit. The detection chip measures the voltage difference across the sampling resistor through a high-precision differential ADC to obtain the original differential voltage Vshunt, and calculates the current I flowing through the sampling resistor by combining the resistance value R138.

[0010] Furthermore, the conference host polls the data of the four air ports every 500ms and saves it locally. After polling four times, the local system records that each air port has four power values. At this time, the average of all four power values ​​of each air port is calculated separately as the actual power value of this air port at the current moment.

[0011] Furthermore, the detection chip is an INA226 chip.

[0012] Furthermore, the power supply provides a maximum power of 320W, each aviation port has a maximum load capacity of 80W, and the aviation port voltage is 36V.

[0013] Furthermore, each air port is directly connected to a conference microphone, and multiple conference microphones are cascaded together, thereby allowing each air port to be connected to multiple conference microphones.

[0014] Furthermore, the conversion time of the original voltage register, bus voltage register, and current register is set to 4.156ms, and the number of average values ​​is set to 16.

[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the intelligent node management system for the conference host with multiple aviation ports according to the present invention.

[0017] Figure 2 This is a circuit diagram of the detection chip in the intelligent node management system of the multi-aviation port conference host of the present invention. Detailed Implementation

[0018] This invention carefully analyzed existing intelligent node management systems and found that their high failure rate is due to the lack of detection and visualization functions for the actual load power of each aviation port, making it impossible to determine how many conference microphones are currently connected. Furthermore, it lacks a power overload protection mechanism, thus easily leading to malfunctions. To address this, this invention connects conference microphones to the conference host via aviation ports and installs a detection chip at each aviation port to monitor the voltage and current of each port in real time, thereby calculating the real-time load power of each port and ensuring the safety of real-time load power.

[0019] Please see Figure 1 The intelligent node management system for multi-aviation ports of the conference host of the present invention includes multiple conference microphones 1, multiple connectors 2, conference host 3, multiple detection chips 4, and a host computer (not shown).

[0020] The conference microphone 1 is used to receive user speech information, convert the sound signal into an electrical signal, and continuously input an initial signal in the form of an electrical signal.

[0021] The connector 2 is used to connect the conference microphone 1 to the conference host 3. Multiple microphones are connected to the connector 2 in a cascaded manner. The connector 2 receives the initial signal from the conference microphone 1 in real time and transmits it to the conference host 3. The conference host 3 is provided with multiple aviation ports 31. The connector 2 is connected to the conference host 3 through the aviation ports 31. The conference host 3 obtains user speech information through the initial signal.

[0022] Each detection chip 4 is respectively installed at each aviation port 31 and connected to the aviation port 31 via a load bus to detect the voltage and current at each aviation port 31 in real time. Figure 1 The dashed lines represent the connection type of the load bus, distinguishing it from the conventional data connection type represented by the implementation section. Preferably, the detection chip 4 uses the INA226 chip; please refer to [link to relevant documentation]. Figure 2 , Figure 2 R138 on the load circuit is a sampling resistor with a resistance of R138 = 10mΩ. The IN+ and IN- pins of detection chip 4 are connected to the two ends of the sampling resistor on the load circuit, respectively. The internal detection uses a high-precision differential ADC to measure the voltage difference Vshunt across the sampling resistor, i.e., the original differential voltage, and calculates the current I flowing through the sampling resistor by combining this with the resistance value R138. The VBUS pin of detection chip 4 measures the load bus voltage, and then uses this measurement in conjunction with the LSB bus voltage parameter to calculate the actual current value, actual voltage value, and actual power value.

[0023] The detection chip 4 includes a raw voltage register, a bus voltage register, a current register, and a calibration register. The conversion time for the raw voltage register, bus voltage register, and current register is set to 4.156ms, the number of average calculations is set to 16, and both the current shunting and bus acquisition modes are set to continuous acquisition mode. Specifically, the INA226 chip's continuous acquisition mode is one of its most commonly used operating modes, used to automatically and continuously sample and update voltage, current, and power consumption in the background, eliminating the need for manual triggering of conversions by the user code each time. Therefore, in subsequent application logic, it is only necessary to read the voltage and current values ​​of the four aviation ports 31 at a specific period of 500ms.

[0024] Specifically, upon power-on startup, the load bus is initialized, and the four detection chips 4 are reset. Upon restarting, all their registers are restored to their default values ​​to avoid interference from other parameters.

[0025] The original voltage register (0x01) stores the original differential voltage Vshunt, in units of 2.5uV / bit; After the calibration register (0x05) is set, the detection chip 4 will automatically calculate the reading current Current_Reg based on the original differential voltage Vshunt and the configured calibration register value, and store the reading current Current_Reg in the current register (0x04); The current LSB is the minimum resolution of the current register. The current register is 16 bits, with the highest bit used to represent the sign bit and the remaining 15 bits used to represent the current. The current LSB is calculated based on the maximum current Imax that may flow through the circuit. The maximum current Imax that may flow through the circuit is calculated as follows: When the maximum power supplied by the power supply is Pmax, it is evenly distributed to the four aviation ports 31. Then the maximum power of each aviation port 31 is Pmax / 4, and the voltage of aviation port 31 is 36V. The maximum current can be calculated from I=P / U as approximately: Pmax / (4*36)V. In one embodiment, the maximum power supplied by the power supply is 320W, which is evenly distributed to the four aviation ports 31. The maximum power carried by each aviation port 31 is 80W, and the voltage of the aviation port 31 is 36V. The maximum current can be calculated from I=P / U as approximately: 80W / 36V = 2.22 (A). The formula for calculating the current LSB is: Current_LSB = Imax / 2^15; The formula for calculating the calibration register value is: Cal = 0.00512 / Current_LSB*R138; Among them, 0.00512 is the fixed value in the manual for the calibration register in the INA226 chip; Multiply the reading current Current_Reg from the current register (0x04) by Current_LSB to obtain the actual current value I0; The internal formula for calculating Current_Reg in the chip is: Current_Reg = Vshunt *Cal / 2048; 2048 is the datasheet fixed value for the current register in the INA226 chip.

[0026] Connect the VBUS pin of the INA226 chip to the positive terminal of the load bus circuit to measure the current bus voltage Vbus. The current bus voltage Vbus is stored in the bus voltage register (0x02). Multiply the value read from the bus voltage register by the bus voltage LSB = 1.25mV to obtain the actual bus voltage value. Here, 1.25mV is a fixed value in the manual for the bus voltage register in the INA226 chip.

[0027] Multiply the actual current and the actual bus voltage to obtain the real-time load power of aviation port 31 at this time: Power = U0 * I0; The conference host 3 obtains the current voltage and current of the aviation port 31 through the detection chip 4, calculates and displays the real-time load power of each aviation port 31 based on the voltage and current, and performs deviation judgment. The conference host 3 includes a screen display module and a power deviation logic processing. The screen display module is used to display the real-time load power of each aviation port 31 on the screen of the conference host 3. The power deviation logic processing is used to determine whether the deviation between the current detected real-time load power and the previously detected real-time load power is greater than 1W. If so, the real-time load power of each aviation port 31 is sent to the host PC control software. Users can remotely monitor and observe in real time through the host computer and control and handle problems in a timely manner.

[0028] Specifically, the power calculation module polls the data of the four aviation ports 31 every 500ms, that is, it reads the current and voltage values ​​of the detection chip 4 through the monitoring bus, calculates the total power of the current aviation port 31 based on the current and voltage read at this time, and records the power data of each aviation port 31 separately. After polling four times, the average of all four power values ​​of each aviation port 31 is calculated as the real-time load power of the current aviation port 31 obtained in this detection.

[0029] The conference host 3 will determine whether the real-time load power of each aviation port 31 is within a safe range. If the real-time load power of any aviation port 31 exceeds the safe threshold, the screen display page will switch to the corresponding alarm page to prompt the user to handle it in time.

[0030] In one embodiment, the conference host 3 updates the latest power value of the four aviation ports 31 and determines whether the power of one of them is greater than the set power safety threshold of 80W. If it does not exceed the safety threshold, the power of the four aviation ports 31 is displayed normally when entering the node management page. If it exceeds the safety threshold, the conference host 3 actively switches to the power alarm page to prompt the user to handle it in time to avoid port burnout or abnormal host operation.

[0031] In particular, users can press the return button on the power alarm page to return to the detailed power display interface, so as to intuitively observe which specific aviation port 31 has exceeded the safety threshold in real time, which facilitates on-site maintenance and debugging, improves troubleshooting efficiency, and reduces the risk of fault expansion.

[0032] The intelligent node management system for multi-aviation ports of this invention uses a detection chip and a small number of peripheral components, requiring no large-scale hardware modifications. It increases power monitoring of each aviation port at a low cost and provides overload warnings to prevent port burnout and other malfunctions, significantly reducing the system failure rate. Furthermore, it is flexible in application, suitable for conference host systems, broadcast control, audio distribution, and other fields. Its simple structure allows for easy expansion, supporting more nodes, cascaded interfaces, and remote maintenance.

[0033] The embodiments described above merely illustrate the preferred implementation of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and the present invention also intends to include these modifications and variations.

Claims

1. A conference host multi-air interface intelligent node management system, characterized in that: The application relates to a conference system, which comprises a plurality of conference microphones, a plurality of connectors, a conference host and a plurality of detection chips; the conference microphone receives user speech information in real time, converts a sound signal form into an electric signal form, and continuously inputs an initial signal in the electric signal form; the plurality of conference microphones are connected in cascade and connected with the conference host through the connectors; a plurality of aviation ports are arranged on the conference host, the connectors are connected with the conference host through the aviation ports, and the conference host obtains user speech information through the initial signal; each detection chip is arranged at each aviation port and connected with the aviation port through a load bus, and the voltage and current at each aviation port are detected in real time; the conference host calculates and displays the real-time load power of each aviation port according to the voltage and current of each aviation port; meanwhile, the conference host judges whether the real-time load power of each aviation port is in a safe range, and switches to a power alarm prompt interface when the safe threshold is exceeded, so as to remind the user to handle in time.

2. The intelligent node management system for multi-aircraft conference hosting according to claim 1, wherein: The conference host also judges the deviation of the real-time load power of each aviation port, and sends the real-time load power of each aviation port to the outside world when the deviation between the real-time load power detected this time and the real-time load power detected last time is greater than 1W, so as to realize data monitoring.

3. The intelligent node management system for a multi-aircraft conference host according to claim 2, wherein: The detection chip comprises an original voltage register, a bus voltage register, a current register and a calibration register; the original voltage register stores an original differential voltage Vshunt, and the unit is 2.5uV / bit; After the calibration register is set, the detection chip automatically calculates a reading current Current_Reg according to the original differential voltage Vshunt and the calibration register value, and stores the reading current in the current register, wherein the current LSB is the minimum resolution of the current register, and the current LSB is calculated according to the maximum current Imax flowing in the circuit; When the maximum power provided by the power supply is Pmax, the maximum power of each aviation port is Pmax / 4, and the aviation port voltage is 36V, the maximum current flowing in the circuit is calculated according to I=P / U as follows: Pmax / (4*36)V; The current LSB calculation formula is as follows: Current_LSB = Imax / 2^15; The calibration register value calculation formula is as follows: Cal = 0.00512 / Current_LSB*R138; Wherein, 0.00512 is a manual fixed value of the calibration register in the detection chip; The reading current Current_Reg obtained by the current register is multiplied by Current_LSB to obtain an actual current value I0; Wherein, the reading current Current_Reg calculation formula is as follows: Current_Reg = Vshunt *Cal / 2048; Wherein, 2048 is a manual fixed value of the current register in the INA226 chip; The VBUS of the detection chip is connected to the positive pole of the load bus circuit to measure the current bus voltage Vbus, which is stored in the bus voltage register. The value read out of the bus voltage register is multiplied by the bus voltage LSB=1.25mv to obtain the actual bus voltage value U0, wherein 1.25mv is a manual fixed value of the bus voltage register in the detection chip. The actual current and the actual bus voltage are multiplied to obtain the real-time load power of the current aviation port at this time: Power = U0 * I0.

4. The intelligent node management system for a multi-aircraft conference host according to claim 3, wherein: The conference host updates the latest power value of each aviation port and judges whether the power of a certain aviation port at this time is greater than the set safety threshold. When the safety threshold is not exceeded, the power of each aviation port is normally displayed when entering the node management page. When the safety threshold is exceeded, the conference host actively switches to the power alarm page, thereby reminding the user to handle it in time.

5. The intelligent node management system for a multi-aircraft conference host according to claim 4, wherein: The sampling resistor is arranged on the load circuit of the detection chip, and the resistance value of the sampling resistor is R138=10mΩ. The IN+ and IN- pins of the detection chip are respectively connected to the two ends of the sampling resistor. The detection chip measures the voltage difference between the two ends of the sampling resistor through a high-precision differential ADC to obtain the original differential voltage Vshunt, and calculates the current I flowing through the sampling resistor in combination with the resistance value R138 of the sampling resistor.

6. The intelligent node management system for a multi-aircraft conference host according to claim 5, wherein: The conference host polls the data of the four aviation ports every 500ms and saves them locally. After polling four times, the local record has four power values for each aviation port. At this time, the average value of all four power values of each aviation port is calculated as the actual power value of this aviation port at the current time.

7. The intelligent node management system for a multi-aircraft conference host according to claim 6, wherein: The detection chip is INA226 chip.

8. The intelligent node management system for a multi-aircraft conference host according to claim 7, wherein: The maximum power provided by the power supply is 320W, and the maximum power of each aviation port under load is 80W. The aviation port voltage is 36V.

9. The intelligent node management system for a multi-aircraft conference host according to claim 8, wherein: Each aviation port is directly connected to a conference microphone, and multiple conference microphones are cascaded with each other, so that each aviation port is connected to multiple conference microphones.

10. The intelligent node management system for a multi-aircraft conference host according to claim 9, wherein: The conversion time of the original voltage register, the bus voltage register and the current register is set to 4.156ms, and the number of average values is set to 16.

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