Manager for audio sound reinforcement hot backup system

Abstract

The invention discloses a manager for an audio amplification hot backup system, which generates a detection signal according to a preset detection logic and sends the detection signal to a processing system, and the processing system comprises a main processing system and at least one backup processing system. The processing system generates a feedback signal according to the content of the detection signal and sends the feedback signal to the hot backup manager, and the hot backup manager obtains a detection result according to the content of the feedback signal and judges whether to switch a signal output channel of a local machine or output a switching control command to other equipment according to the detection result. The preset detection mode is any one or a combination of more of signal quality detection, network connection feedback detection and digital response detection, and the detection logic automatically switches proper system signal output according to the health condition of the main system and the standby system under the condition of default main system output, so that when the main system or the standby system has a fault, the system can be switched to the proper system signal output. And the other system can immediately take over the task and synchronously give out an alarm prompt.

Description

Technical Field

[0001] The present invention relates to the technical field of switching between main and standby processing systems, and more specifically, to a manager for an audio sound reinforcement hot backup system. Background Art

[0002] In signal processing related technologies, in order to ensure the uninterrupted operation of critical tasks, a backup system is usually used to enhance the reliability and stability of the system, that is, two systems are prepared, and when the main system fails, the backup system is manually switched. This method not only takes a long time to switch, but also requires manual intervention, increasing the risk of operational errors. With the development of technology, the concept of hot backup has been introduced, and its goal is to be able to seamlessly switch to the backup system when the main system fails, reducing the time of service interruption.

[0003] However, the existing hot backup solutions still have some shortcomings. For example, in the audio processing system, although the method of mixing and outputting the main and standby systems achieves signal redundancy, it may cause sound quality interference problems when the signals of the main and standby processing systems are inconsistent. In addition, the existing hot backup system uses switches to switch the processing system, which lacks an automated detection and judgment mechanism. The actual operation still relies on manual switching, resulting in the concept of hot backup being realized on the surface, but in fact equivalent to cold backup. In addition, manual switching means that during the switching process, users may experience obvious interruptions or delays, which reduces the user experience, especially in application scenarios that require instant response. This delay is unacceptable. More importantly, many hot backup solutions on the current market mostly only focus on data synchronization or sharing of the main and standby processing systems, but do not perform real-time detection and management of the working status of the main and standby processing systems. This means that in actual applications, when the main system fails, whether the standby system can smoothly take over the workload becomes an unknown. Alternatively, the main system has been in normal use for a long time, and the backup system has never been used, resulting in the inability to know the status of the backup system. If there are problems with the backup system itself, the reliability of the entire signal processing system will be greatly reduced. For example, in a data communication system, if the main link fails, the backup link fails to take over the data flow in time, which may cause data packet loss or delay, thus affecting the performance of the entire network. Similarly, in an audio processing system, if the main system fails and the backup system fails to take over seamlessly, it may cause a short or even long service interruption, affecting the user experience. Summary of the invention

[0004] In order to improve the switching effect of the primary and standby processing systems, the present invention provides a manager for an audio sound reinforcement hot backup system, which can use three detection means to respectively detect the working status of the primary and standby processing systems of the audio sound reinforcement hot backup system, thereby determining the respective working status of the primary and standby processing systems, thereby providing a basis for switching the primary and standby processing systems.

[0005] The technical solution of the present invention is as follows:

[0006] A manager for an audio sound reinforcement hot backup system, wherein the processing system of the audio sound reinforcement hot backup system includes a main processing system and at least one backup processing system, and the signals generated by the main processing system and the backup processing system are output to the outside through the hot backup manager.

[0007] The hot standby manager generates a detection signal according to the preset detection logic and sends the detection signal to the processing system.

[0008] The processing system generates a feedback signal according to the content of the detection signal generated by the hot standby manager, and returns the feedback signal to the hot standby manager.

[0009] The hot backup manager obtains the detection result according to the content of the feedback signal, and determines whether to switch the signal output channel according to the detection result.

[0010] The preset detection method is any one or more combinations of signal quality detection, network connection feedback detection, and digital response detection.

[0011] The hot backup manager is embedded in the signal processing output system (such as the audio sound reinforcement hot backup system), with one end connected to the main processing system and the backup processing system (can be multiple), and the other end connected to the audio output end. The signal source is divided into multiple identical distribution signals by the distributor, and sent to multiple processing systems (including one main processing system and multiple backup processing systems, the number of backup processing systems is at least one), and these processing systems are all connected to the hot backup manager. The hot backup manager continuously generates detection signals according to the built-in detection logic, and these detection signals are sent to each processing system. After receiving the detection signal generated by the hot backup manager, the processing system generates and returns a feedback signal to the hot backup manager according to the content of the detection signal, its own situation and operation logic. The hot backup manager determines the state of the processing system that returns the feedback signal based on the content of the feedback signal, and then determines the best output system based on the switching logic, generates a switching control signal, or generates an alarm signal to send an alarm, or generates a switching control signal and an alarm signal at the same time. The main control module of the hot backup manager receives the switching control signal, and the main control module of the hot backup manager switches the signal output channel, thereby changing the processing system connected to the audio output end. The alarm signal is received by the main control module of the hot backup manager, and the hot backup manager controls its own alarm component to issue an alarm, or outputs an alarm to an external terminal through communication.

[0012] The above-mentioned manager for the audio sound reinforcement hot backup system has a switching logic of

[0013] (1) Default main processing system output;

[0014] (2) The main processing system is in normal state, the backup processing system is in normal state, and the main processing system is in output state. When the system is in the main processing system output state, no switching action is performed;

[0015] (3) The main processing system is in normal state, the backup processing system is in abnormal state, the main processing system is in output state, and when the system is in the main processing system output state, no switching action is performed;

[0016] (4) If the main processing system is in an abnormal state, the backup processing system is in an abnormal state, and the existing output state remains unchanged;

[0017] (5) The main processing system is in an abnormal state, the backup processing system is in a normal state, and the backup processing system is in output state. When the system is in the backup processing system output state, no switching action is performed.

[0018] The above-mentioned manager for the audio sound reinforcement hot backup system,

[0019] The hot standby manager generates a quality detection signal and sends the quality detection signal to each processing system.

[0020] The processing system receives the quality detection signal, processes the quality detection signal and generates a quality detection feedback signal, and the processing system sends the quality detection feedback signal to the hot backup manager.

[0021] The hot backup manager receives the quality detection feedback signal, analyzes the signal strength and spectrum characteristics of the quality detection feedback signal sent by each processing system, calculates whether the level strength and waveform deformation of the quality detection feedback signal are within the quality detection fault tolerance range, and determines the status of the processing system that returns the quality detection feedback signal based on the calculation results.

[0022] Furthermore, the hot standby manager pre-sets an adjustable level detection fault tolerance range.

[0023] The hot backup manager performs delay correction and phase correction on the waveform image of the quality detection feedback signal to obtain the level strength of the quality detection feedback signal.

[0024] The hot backup manager determines whether the level strength of the quality detection feedback signal is within the level detection fault tolerance range. If the level strength of the quality detection feedback signal exceeds the level detection fault tolerance range, it is determined that the state of the processing system corresponding to the quality detection feedback signal is abnormal. If the level strength of the quality detection feedback signal is within the level detection fault tolerance range, it is determined that the state of the processing system corresponding to the quality detection feedback signal is normal.

[0025] Furthermore, the hot backup manager pre-sets an adjustable waveform deformation threshold.

[0026] The hot backup manager obtains the waveform image of the quality detection feedback signal, and performs delay correction and phase correction on the waveform image of the quality detection feedback signal.

[0027] The hot backup manager determines whether the waveform deformation amount of the quality detection feedback signal is less than the waveform deformation threshold. If the waveform deformation amount of the quality detection feedback signal is less than or equal to the waveform deformation threshold, it is determined that the state of the processing system corresponding to the quality detection feedback signal is normal. If the waveform deformation amount of the quality detection feedback signal is greater than the waveform deformation threshold, it is determined that the state of the processing system corresponding to the quality detection feedback signal is abnormal.

[0028] When the hot standby manager performs quality detection on the processing system, the hot standby manager generates quality detection signals equal to the number of processing systems. These quality detection signals are recorded and sent to each processing system. After receiving the quality detection signal, each processing system processes it by itself and generates quality detection feedback signals as if it were a signal from a signal source. These quality detection feedback signals are sent to the hot standby manager. After receiving the quality detection feedback signal, the hot standby manager compares the information of the quality detection feedback signal with the fault tolerance range. The comparison content includes signal strength and spectrum characteristics. The former is judged by level strength and the latter is judged by waveform deformation. If the level strength of the quality detection feedback signal exceeds the tolerance range or the waveform deformation of the quality detection feedback signal exceeds the set threshold, it is judged that the state of the processing system that returns the quality detection feedback signal is abnormal. If the level strength of the quality detection feedback signal is within the tolerance range or the waveform deformation of the quality detection feedback signal is less than or equal to the set threshold, it is judged that the state of the processing system that returns the quality detection feedback signal is normal.

[0029] By comparing the quality detection feedback signal with the fault tolerance range, and judging the stability of the quality detection feedback signal according to the signal strength and spectrum characteristics, it is concluded whether the processing status of the signal by the processing system is normal. If there is a large deviation between the quality detection feedback signal and the quality detection fault tolerance range, it can be considered that the processing status of the processing system is not good or there is a problem. The hot backup manager reports an error to the processing system, the timer counts, and prepares to issue an external warning to switch to a processing system with better working status.

[0030] Furthermore, the hot backup manager confirms the smoothness of the waveform image of the quality detection feedback signal. If there is a voltage mutation in the waveform image of the quality detection feedback signal, it is considered that the waveform image of the quality detection feedback signal is not smooth, and it is determined that the processing system state corresponding to the quality detection feedback signal is abnormal.

[0031] Furthermore, the hot standby manager confirms the symmetry of the waveform image of the quality detection feedback signal.

[0032] If the positive half cycle and the negative half cycle of the waveform image of the quality detection feedback signal are asymmetric, it is considered that the waveform image of the quality detection feedback signal is asymmetric, and it is determined that the state of the processing system corresponding to the quality detection feedback signal is abnormal.

[0033] Furthermore, the hot standby manager confirms the symmetry of the waveform image of the quality detection feedback signal.

[0034] If the waveform duty cycle of the quality detection feedback signal is not 1:1, it is considered that the waveform image of the quality detection feedback signal is asymmetric, and it is determined that the state of the processing system corresponding to the quality detection feedback signal is abnormal.

[0035] Furthermore, the hot standby manager confirms the periodicity of the waveform image of the quality detection feedback signal.

[0036] If the period of the quality detection feedback signal is inconsistent with the period of the quality detection signal, it is considered that the waveform image periodicity of the quality detection feedback signal is abnormal, and it is determined that the state of the processing system corresponding to the quality detection feedback signal is abnormal.

[0037] The above-mentioned manager for the audio sound reinforcement hot backup system, the hot backup manager sends a network connection detection signal to the processing system,

[0038] The processing system receives the network connection detection signal, generates a network connection detection feedback signal, and sends the network connection detection feedback signal to the hot standby manager.

[0039] The hot backup manager receives the network connection detection feedback signal, records the number of times the network connection detection feedback signal from the same source is missing within a set time period of the network connection detection, and determines whether the number of times the network connection detection feedback signal is missing within the set time period of the network connection detection reaches a fault tolerance threshold of the network connection detection. If the number of times the network connection detection feedback signal is missing within the set time period of the network connection detection is less than or equal to the fault tolerance threshold of the network connection detection, it is determined that the state of the processing system from which the network connection detection feedback signal comes is normal. If the number of times the network connection detection feedback signal is missing within the set time period of the network connection detection is greater than the fault tolerance threshold of the network connection detection, it is determined that the state of the processing system from which the network connection detection feedback signal comes is abnormal.

[0040] Furthermore, the interval between sending the network connection detection signal is adjustable.

[0041] When the hot standby manager performs network online feedback detection on the processing system, the hot standby manager sends the same network online detection signal to each processing system. The network online detection signal is a collection of data and does not carry any processing commands. It only requires the detection object to return data based on network rules after the network address is determined. The hot standby manager continuously sends network online detection signals to the processing system. The interval between network online detection signals is very short to detect the network connectivity and network delay performance of the test processing system. The processing system receives the network online detection signal and generates network online detection feedback signals one by one according to the network online detection signal. The network online detection signal and the network online detection feedback signal are in a one-to-one mapping relationship. In this process, if the network performance of the processing system is poor, the returned network online detection feedback signal will be missing. According to the content of the network online detection feedback signal, it can be clearly concluded which network online detection signal the missing network online detection feedback signal corresponds to. The network online detection feedback signal has a time sequence. Therefore, after the next network online detection feedback signal is returned, it can be determined that the previous network online detection feedback signal is definitely missing. The hot backup manager continuously counts the network connection detection feedback signals from the same source, and after the network connection detection setting time period, the number of times the network connection detection feedback signals are missing in the network connection detection setting time period in the current state is statistically obtained. The hot backup manager has preset the network connection detection fault tolerance threshold in advance. If the number of times the current network connection detection feedback signal is missing in the network connection detection setting time period is less than or equal to the network connection detection fault tolerance threshold, it can be considered that the processing system status of the returned network connection detection feedback signal is normal. If the number of times the network connection detection feedback signal is missing in the network connection detection setting time period is greater than the network connection detection fault tolerance threshold, it is judged that the processing system status of the returned network connection detection feedback signal is abnormal.

[0042] This network online feedback detection technology can monitor the network connectivity and latency performance of the detection object in real time and accurately by sending commands and receiving feedback signals at a high frequency, and improve the stability and reliability of system judgment through a preset fault tolerance mechanism. When a network problem is detected, the hot backup manager can automatically or manually switch to the backup system), thereby ensuring the continuity and high quality of service.

[0043] The manager for the audio sound reinforcement hot backup system described above, the hot backup manager sends a digital response detection signal to the processing system,

[0044] The processing system receives the digital response detection signal, analyzes and calculates the digital response detection signal, generates a digital response detection feedback signal according to the content of the digital response detection signal and the current state of the processing system, and sends the digital response detection feedback signal to the hot standby manager.

[0045] The hot backup manager receives the digital response detection feedback signal, determines whether the content of the digital response detection feedback signal conforms to the pre-stored content according to the stored data, and determines the correct digital response detection feedback signal.

[0046] The hot backup manager records the number of times the digital response detection feedback signal from the same source is missing during the digital response detection, and determines whether the number of times the digital response detection feedback signal is missing during the set time period of the digital response detection reaches the digital response detection fault tolerance threshold. If the number of times the digital response detection feedback signal is missing during the set time period of the digital response detection is less than or equal to the digital response detection fault tolerance threshold, it is determined that the state of the processing system of the source of the digital response detection feedback signal is normal. If the number of times the digital response detection feedback signal is missing during the set time period of the digital response detection is greater than the digital response detection fault tolerance threshold, it is determined that the state of the processing system of the source of the digital response detection feedback signal is abnormal.

[0047] Furthermore, the sending interval period between digital response detection signals is adjustable.

[0048] When the hot standby manager performs digital response detection on the processing system, the hot standby manager sends a digital response detection signal to the processing system. The digital response detection signal is a collection of data, and its content includes fixed processing commands or processing commands unique to the processing system being detected. The hot standby manager sends the digital response detection signal to the processing system, and the interval between each transmission is very short. The length of this time interval is the standard of detection sensitivity. The shorter the time interval, the higher the sensitivity requirement for the detection object. After receiving the digital response detection signal, the processing system processes the digital response detection signal according to the command information in the digital response detection signal and generates a digital response detection feedback signal. The processing system generates the digital response detection feedback signal multiple times and returns it to the hot standby manager. In this process, it may be affected by the network, or the hardware of the device where the processing system receiving the digital response detection signal is located has a problem, or the software of the processing system has a problem, etc., resulting in the loss or error of the returned digital response detection feedback signal, so that the hot standby manager cannot receive or receives a digital response detection feedback signal with incorrect content. Therefore, before calculating the number of missing digital response detection feedback signals, the hot standby manager first determines whether the content of the returned digital response detection feedback signal is correct. The hot standby manager pre-stores the correct data content of the digital response detection, calls the digital response data in the memory, compares and confirms these digital response data with the content of the digital response detection feedback signal, obtains the digital response detection feedback signal with the correct digital response content, and then judges the number of missing digital response detection feedback signals within the set time period of the digital response detection based on these digital response detection feedback signals with the correct content. Since the digital response detection signal and the digital response detection feedback signal are in a one-to-one mapping relationship, the content of the digital response detection signal and the digital response detection feedback signal contains corresponding information to identify the corresponding relationship, and can be used to judge whether the returned digital response detection feedback signal is indeed or whether it is returned within a limited time. Therefore, the number of missing digital response detection feedback signals can be obtained through the received digital response detection feedback signal, and the number of missing can be accumulated and recorded. Since the sending interval period between the digital response detection signals has been determined, theoretically the number of digital response detection feedback signals returned within a certain time period is also determined, so the number of missing digital response detection feedback signals can be calculated and judged based on the set time period. The hot backup manager compares the number of times the digital response detection feedback signal is missing within the set time period of the digital response detection with the preset digital response detection fault tolerance threshold to determine whether the cumulative number of missing times is within the digital response detection fault tolerance range, thereby determining whether there is a problem with the processing system that returns the digital response detection feedback signal.If the number of times the digital response detection feedback signal is missing within the set time period of the digital response detection is less than or equal to the digital response detection fault tolerance threshold, it can be considered that the status of the processing system that returns the digital response detection feedback signal is normal. If the number of times the digital response detection feedback signal is missing within the set time period of the digital response detection is greater than the digital response detection fault tolerance threshold, it is judged that the status of the processing system that returns the digital response detection feedback signal is abnormal.

[0049] Compared with network online feedback detection, digital response detection has more command content that needs to be analyzed and calculated by the processing system. Network online feedback detection does not require the detected processing system to perform calculations. The processing system basically only needs to return the received content as it is through the network processing module, while digital response detection requires the DSP processing system (digital signal processing system) to perform calculations and processing and then return the calculation results. Therefore, there are more components in the processing system associated with digital response detection. In addition to the hardware and software of the network, it also includes the hardware and software of the main body where the processing system is located, and even includes communication protocols, etc. Therefore, under normal circumstances, the probability of missing the returned digital response detection feedback signal is extremely low. Only when there is a problem with the above-mentioned associated objects, or when there is a problem with the connection between each other, there is a possibility of missing beyond the predetermined situation. Therefore, the digital response detection determines whether there is an abnormality in the processing system by comparing the number of missing times of the digital response detection feedback signal with the digital response detection fault tolerance threshold.

[0050] When the number of missing times recorded by the digital response detection within the set time period of the digital response detection is greater than the digital response detection fault tolerance threshold, after the hot backup manager switches the signal output processing system (that is, after the hot backup manager switches the signal output channel), the number of missing times recorded by the digital response detection is cleared and reset.

[0051] The above-mentioned manager for the audio sound reinforcement hot backup system, when the machine cannot work normally, the original channel switching result of the signal output remains unchanged, the switching state maintains the final judgment result, keeps the original signal output and the output quality is normal, until the machine resumes normal operation and sends a switching control signal, and then switches the output system according to the switching control signal.

[0052] When the machine cannot work normally due to power failure or other reasons, it still maintains the previously set signal channel switching state, and maintains the original switching result and signal output. In other words, if the machine has used the processing signal of the backup processing system as the output signal before the power failure, then even if the machine (hot backup manager) loses power, the state of switching to the backup processing system will be maintained, and the signal output by the backup processing system will still be output to the subsequent output device. After the machine resumes normal operation (power supply is normal), it generates a switching control signal according to its own working logic, and then switches the output system according to the content of the switching control signal. In addition, no matter what the hot backup manager is in the switching state or the power-on state, the quality of the sound output is not affected.

[0053] The above-mentioned manager for the audio sound reinforcement hot backup system, the hot backup manager is provided with a counter and a display screen, and the counter records the number of fault detection results of the corresponding processing system.

[0054] The hot backup manager sets the signal input ports to be connected to the processing systems respectively. The number of the signal input ports is the same as the number of the connected processing systems. On this basis, a counter is set so that the counter can record the detection results of each processing system respectively. When the hot backup manager obtains a certain detection result of a processing system as a failure, the counter corresponding to the processing system records it once. The set counter can record the detection results of a single processing system or the detection results of all processing systems.

[0055] The counting data of the counter can still be maintained when the hot backup manager is not powered (normal temperature), and can also be reset by the reset command of the hot backup manager. The reset command can be implemented by calling the hot backup manager through a terminal connection, or by issuing a control command through an external communication interface, or by manual operation.

[0056] The manager for the audio sound reinforcement hot backup system is provided with a display screen, and the content of the display screen is any one or a combination of any number of the following:

[0057] (1) Display the number of fault detection results of the processing system;

[0058] (2) Display the number of switching times of the processing system;

[0059] (3) Display the working status information of the hot backup manager;

[0060] (4) Setting interactive input components;

[0061] (5) Display the feedback data information of the processing system;

[0062] (6) Displaying the feedback data information of the externally connected terminal;

[0063] (7) Local performance setting component;

[0064] (8) Warning information;

[0065] (9) This unit switches the signal output channel setting key.

[0066] A display screen is provided on the hot backup manager, and the display screen may have display and interactive input functions, or may only have display or only have interactive input functions. The displayed content may include the number of fault detection results of the processing system recorded by the counter, the number of times the hot backup manager completes the switching of the processing system, the working status information of the hot backup manager itself (such as its own interface connection status, temperature, etc.), the feedback data content of the processing system, the feedback data information of the externally connected terminal (the information fed back by the external terminal connected through the serial interface or the network interface, etc.), and the warning information (including its own status alarm and the processing system fault alarm, etc.). The interactive input may include input components for setting detection parameters, such as digital keys for inputting digital response detection fault tolerance threshold, network connection detection fault tolerance threshold, level detection fault tolerance range, etc., and input components for setting local performance, such as local performance setting keys such as function setting, system setting, external setting, and alarm setting, and setting keys for manually switching the signal output channel of the hot backup manager, which can force the output channel to switch.

[0067] The above-mentioned manager for the audio sound reinforcement hot backup system, the hot backup manager is provided with an external communication interface, the hot backup manager is connected to the external terminal through the external communication interface and realizes communication, and the communication content includes the detection results and warning information of the processing system by the hot backup manager.

[0068] The hot backup manager sets up a serial interface and a network interface to respectively connect and communicate with different terminal devices.

[0069] The above-mentioned manager for the audio sound reinforcement hot backup system has a cascading port set in the hot backup manager. The hot backup managers are cascaded through the cascading port to realize the extended connection of the processing system. The number of cascaded hot backup managers is unlimited, so that the number of ports of the processing system connected to the hot backup manager is increased.

[0070] The hot standby manager is provided with a cascade input port and a cascade output port, so that the hot standby managers are cascaded through the cascade input port and the cascade output port, and the cascade output port of the hot standby manager of the upper level is connected to the cascade input port of the hot standby manager of the lower level. In this way, the hot standby manager of the first level is the hot standby manager master, and all other hot standby managers connected through the cascade port are hot standby manager slaves. Among them, only the hot standby manager master has a detection function, and the other hot standby manager slaves receive the transmission channels for detection signals and feedback signals, and the hot standby manager slaves receive the switching control signals sent by the hot standby manager master, and play the role of control signal output channels.

[0071] The added hot backup manager slaves increase the number of signal input ports connected to the hot backup manager host for connecting to external processing systems. The purpose of cascading is to expand the number of channels of the processing system connected to the hot backup manager (i.e., increase the number of backup processing systems to be processed).

[0072] The above-mentioned manager for the audio sound reinforcement hot backup system, the alarm method includes any one or more of screen display information, sound prompt, and sending prompt content to the terminal device.

[0073] When the hot backup manager determines through the detection results that the status of the main processing system or the backup processing system is abnormal, the hot backup manager will issue an alarm. The alarm method includes any one or more combinations of screen display information, sound prompts, and sending prompt content to the terminal device.

[0074] The beneficial effect of the present invention according to the above scheme is that the present invention designs a manager for an audio sound reinforcement hot backup system, which simultaneously realizes the digital response detection of the processing system and the seamless switching of the primary and backup processing systems, greatly reducing the service interruption time, and ensuring that when the primary system fails, the backup system can immediately take over the task, thereby enhancing the system reliability and user experience.

[0075] 1. The hot backup manager of the present invention can synchronously control the switching between the main processing system and the backup processing system, so that when the main system fails, it can quickly and seamlessly switch to the backup system, reducing the service interruption time.

[0076] 2. It can detect the working status of the main and backup processing systems in real time, ensuring that the backup system can smoothly take over the workload when the main processing system fails, thereby improving the reliability of the overall system, and can provide timely feedback on the status of the processing system, which is conducive to the maintenance and repair of the processing system.

[0077] 3. The hot backup manager of the present invention has various detection methods for the processing system, including signal quality detection, network online feedback detection, and digital response detection. When in use, these three detection methods can be arbitrarily combined. At the same time, all three detection methods have a certain fault tolerance range, so that the hot backup manager can tolerate network fluctuations and other minor faults within a certain range. The various detection methods enable the hot backup manager to respond and give feedback quickly when a problem is detected, and automatically or manually switch to a suitable processing system, ensuring the continuity and high quality of the service.

[0078] 4. The hot backup manager of the present invention has the function of power-off retention. When the local machine loses power or fails to work normally, it can still maintain the original preferred output processing system signal channel output, and will not ignore the working status of the processing system and still restore the main processing system to output signals. The original signal output is kept unchanged and the quality is not affected by the status of the hot backup manager.

[0079] 5. The hot backup manager of the present invention has a cascading function. The hot backup manager host and the hot backup manager slave are distinguished by setting the host mode and the slave mode. While maintaining the detection function of the hot backup manager host, the existence of the hot backup manager slave can realize the expansion of the signal output channel connecting the processing system connection port and the processing system, so that the hot backup manager host can complete the communication management of more devices and larger-scale systems through the hot backup manager slave.

[0080] 6. The hot backup manager of the present invention can be used as a detection tool for the digital audio sound reinforcement hot backup system. After the hot backup manager completes the detection of the processing system, it can output a switching control signal to a third-party digital switching device through the serial interface and the network interface, thereby completing the automatic switching management of the back-end digital network switching device.

[0081] 7. The hot backup manager of the present invention retains the manual switching function of the processing system. After the hot backup manager completes the detection of the processing system, it outputs warning information through the serial interface, network interface, and its own screen display to urge manual switching, so that the equipment management personnel have an autonomous control method, and it is also convenient to integrate with the third-party system to enrich the control management function BRIEF DESCRIPTION OF THE DRAWINGS

[0082] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0083] Figure 1This is a schematic diagram of the structure when the hot backup manager is connected to the signal processing system.

[0084] Figure 2 This is a structural diagram of an application example 1 of a hot backup manager.

[0085] Figure 3 This is a structural diagram of the second application embodiment of the hot backup manager.

[0086] Figure 4 This is a structural diagram of the third application embodiment of the hot backup manager.

[0087] Figure 5 This is a structural diagram of the fourth application embodiment of the hot backup manager.

[0088] Figure 6 This is a structural diagram of the fifth application embodiment of the hot backup manager.

[0089] Figure 7 This is a structural diagram of the sixth application embodiment of the hot backup manager.

[0090] Figure 8 This is a structural diagram of the seventh application embodiment of the hot backup manager. DETAILED DESCRIPTION

[0091] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0092] A manager for an audio sound reinforcement hot backup system, wherein the processing system of the audio sound reinforcement hot backup system includes a main processing system and at least one backup processing system. The signals generated by the main processing system and the backup processing system are output to the outside through the hot backup manager. These processing systems can be physical devices (a single device or a system composed of multiple devices) or virtual systems.

[0093] The hot backup manager generates a detection signal according to the preset detection logic and sends the detection signal to the processing system. The processing system generates a feedback signal according to the content of the detection signal generated by the hot backup manager and returns the feedback signal to the hot backup manager. The hot backup manager obtains the detection result according to the content of the feedback signal and determines whether to switch the signal output channel according to the detection result.

[0094] The preset detection method is any one or more combinations of signal quality detection, network connection feedback detection, and digital response detection.

[0095] like Figure 1As shown, in a specific embodiment, the (audio) signal source is divided into multiple identical distribution signals by a distributor, and the distribution signals of different paths are respectively transmitted to the main processing system and the backup processing system. The main processing system receives the distribution signal for processing, generates the main processing system processing signal and outputs it to the hot backup manager, and the backup processing system receives the distribution signal for processing, generates the backup processing signal and outputs it to the hot backup manager. The hot backup manager controls the signal output channel connecting the processing system and the audio output terminal (processing equipment such as power amplifier, filter, etc. can be set between the hot backup manager and the audio output terminal), thereby realizing the selection and switching of the processing system that controls the output.

[0096] The hot backup manager continuously sends detection signals to the main processing system and the backup processing system. The main processing system and the backup processing system receive the detection signals, process the detection signals and generate feedback signals. The main processing system and the backup processing system transmit the feedback signals to the hot backup manager. The hot backup manager determines the respective states of the main processing system and the backup processing system based on the feedback signals, and determines whether it is necessary to switch the signal output channel to replace the output processing system.

[0097] Among them, the signal quality detection is a detection to determine whether the difference between the detection signal and the feedback signal is within the preset fault tolerance range, the network connection feedback detection is a detection to determine whether the number of missing times of the detection signal corresponding to the feedback signal is within the preset fault tolerance range, and the digital response detection is a detection to determine whether the number of missing times of the detection signal corresponding to the feedback signal processed by the processing system is within the preset fault tolerance range.

[0098] In this embodiment, after the hot standby manager obtains the status information of each processing system, it generates a switching control signal according to the preset switching logic. The switching control module of the hot standby manager receives the switching control signal and manages the output of the processing system connected thereto, so that the content outputted by the audio output terminal is the processing result of a certain processing system. The entire switching process takes 1.2ms-1.4ms.

[0099] In another specific embodiment, after the hot standby manager obtains the status information of each processing system, it generates a warning signal about the processing system with a negative detection result, and the hot standby manager issues an alarm prompting the staff to perform manual switching.

[0100] In another specific embodiment, after the hot backup manager obtains the status information of each processing system, it generates a warning signal about the processing system for the processing system with a negative detection result, and the hot backup manager issues an alarm prompt. At the same time, the hot backup manager generates a switching control signal according to a preset switching logic. The switching control module of the hot backup manager receives the switching control signal and manages the output of the processing system connected to it, so that the content output by the audio output end is the processing result of the processing system with a positive detection result.

[0101] The hot backup manager alarm mode includes any one or more of screen display information, sound prompt, and sending prompt content to the terminal device.

[0102] In this embodiment, the hot backup manager alarm is in the form of screen display information, which displays the status abnormality object and status abnormality type on the display screen of the hot backup manager host, such as displaying that the signal quality detection result of the main processing system is negative.

[0103] In another specific embodiment, the hot backup manager alarms in the form of sound prompts, and the hot backup manager plays the alarm prompt sound externally through a sound playing component such as a speaker or buzzer arranged on the hot backup manager host.

[0104] In another specific embodiment, the hot standby manager alarms by sending prompt content to the terminal device. The hot standby manager host generates an alarm signal and sends it to the terminal device (such as a central control system, a warning prompt terminal, a smart phone, a computer, etc.) through communication (cellular network, WIFI, Bluetooth, 4G, 5G, serial port communication, etc.), and displays the abnormal state object and abnormal state type on the terminal device. In one embodiment, the hot standby manager sets a plurality of serial ports.

[0105] The hot standby manager switch logic is

[0106] (1) The main processing system is in normal state, the backup processing system is in normal state, and the existing output state remains unchanged;

[0107] (2) The main processing system is in a normal state, while the backup processing system is in an abnormal state, and the output of the main processing system is maintained;

[0108] (3) If the main processing system is in an abnormal state, the backup processing system is in an abnormal state, and the existing output state remains unchanged;

[0109] (4) The main processing system is in an abnormal state, the backup processing system is in a normal state, and the backup processing system outputs.

[0110] If the current state is consistent with the switching logic, the hot standby manager generates a switching control command but does not implement the switching action.

[0111] The signal quality detection process of the processing system by the hot backup manager (only the hot backup manager host has the detection function, so the hot backup managers described in the relevant content about the detection of the processing system are all the hot backup manager host) is as follows.

[0112] The hot backup manager generates a quality detection signal and sends the quality detection signal to each processing system. The processing system receives the quality detection signal, processes the quality detection signal and generates a quality detection feedback signal. The processing system sends the quality detection feedback signal to the hot backup manager. The hot backup manager receives the quality detection feedback signal, analyzes the signal strength and spectrum characteristics of the quality detection feedback signal sent by each processing system, calculates whether the level strength and waveform deformation of the quality detection feedback signal are within the quality detection fault tolerance range, and determines the state of the processing system that returns the quality detection feedback signal based on the calculation results.

[0114] The quality detection of the processing system by the hot backup manager includes signal strength detection and spectrum characteristic detection. In essence, both detection contents are to compare the difference between the original quality detection signal and the quality detection feedback signal returned by the processing system, and to judge whether there is a difference in signal strength and spectrum characteristics, and whether this difference is within the fault tolerance range. Signal strength detection is manifested as the level value of the signal, and the content of spectrum characteristic detection includes signal frequency, symmetry, smoothness, periodicity, etc. of the waveform.

[0115] The hot backup manager pre-sets an adjustable level detection fault tolerance range. The hot backup manager performs delay correction and phase correction on the waveform image of the quality detection feedback signal, and obtains the level strength of the quality detection feedback signal. The hot backup manager determines whether the level value of the quality detection feedback signal is within the level detection fault tolerance range. If the level value of the quality detection feedback signal exceeds the level detection fault tolerance range, it is determined that the state of the processing system corresponding to the quality detection feedback signal is abnormal. If the level value of the quality detection feedback signal is within the level detection fault tolerance range, it is determined that the state of the processing system corresponding to the quality detection feedback signal is normal.

[0116] The hot backup manager pre-sets an adjustable waveform deformation threshold, the hot backup manager obtains the waveform image of the quality detection feedback signal, and performs delay correction and phase correction on the waveform image of the quality detection feedback signal, the hot backup manager determines whether the waveform deformation amount of the quality detection feedback signal relative to the quality detection signal is less than the waveform deformation threshold, if the waveform deformation amount of the quality detection feedback signal is less than or equal to the waveform deformation threshold, it is determined that the state of the processing system corresponding to the quality detection feedback signal is normal, if the waveform deformation amount of the quality detection feedback signal is greater than the waveform deformation threshold, it is determined that the state of the processing system corresponding to the quality detection feedback signal is abnormal.

[0117] The hot backup manager confirms the smoothness of the waveform image of the quality detection feedback signal. If there is a voltage mutation in the waveform image of the quality detection feedback signal, it is considered that the waveform image of the quality detection feedback signal is not smooth, and it is determined that the processing system state corresponding to the quality detection feedback signal is abnormal.

[0118] The hot backup manager confirms the symmetry of the waveform image of the quality detection feedback signal. If the positive half cycle and the negative half cycle of the waveform image of the quality detection feedback signal are asymmetric, it is considered that the waveform image of the quality detection feedback signal is asymmetric, and the processing system state corresponding to the quality detection feedback signal is judged to be abnormal.

[0119] The hot backup manager confirms the periodicity of the waveform image of the quality detection feedback signal. If the period of the quality detection feedback signal is inconsistent with the period of the quality detection signal, it is considered that the periodicity of the waveform image of the quality detection feedback signal is abnormal, and the processing system state corresponding to the quality detection feedback signal is judged to be abnormal.

[0120] In this embodiment, the hot standby manager generates a standard detection audio signal (i.e., quality detection signal), which is usually a 1000Hz sine wave, a 0dB amplitude sine wave signal level, and about 0.775V. The frequency and waveform of the standard detection audio signal can be adjusted through background commands. The standard detection audio signal is an independent signal on two different tracks, which is sent to the input end of the main processing system and the backup processing system through the output port of the hot standby manager. After being processed by the main processing system and the backup processing system, the quality detection feedback signal (i.e., the main system quality detection feedback signal and the backup system quality detection feedback signal) is returned to the input port of the hot standby manager. Considering that the main system quality detection feedback signal or the backup system quality detection feedback signal may have a slight delay during the transmission process, the hot standby manager needs to perform delay correction on the returned signal to ensure that the signal is in the correct timing position during detection, and also correct the phase of the returned signal to eliminate the phase difference caused by different transmission paths. After completing the above correction, the hot backup manager detects the level value of the returned main system quality detection feedback signal or the backup system quality detection feedback signal to confirm whether the signal strength meets expectations, that is, whether the level value of the main system quality detection feedback signal or the backup system quality detection feedback signal is within the predetermined fault tolerance range.

[0121] On the other hand, the hot backup manager detects the waveforms of the main system quality detection feedback signal and the backup system quality detection feedback signal. The waveform images of the main system quality detection feedback signal and the backup system quality detection feedback signal are obtained, and after phase correction and delay correction, the corrected waveforms are compared for periodicity, smoothness, and symmetry:

[0122] Determine whether the period of the returned main system quality detection feedback signal or backup system quality detection feedback signal is consistent with the period of the standard detection audio signal. If not, determine that the state of the processing system corresponding to the quality detection feedback signal is abnormal (error). Otherwise, determine that the state of the corresponding processing system is normal.

[0123] Determine whether there is a sudden change in the graphics of the main system quality detection feedback signal or the backup system quality detection feedback signal (i.e., the line is not smooth, because the standard detection audio signal is a sine wave, so the returned signal is also a sine wave. In addition to graphic recognition, in terms of digital calculation, it can be determined whether there are discontinuous points or corner points). If there is a sudden change in the graphics, it is determined that the state of the processing system corresponding to the quality detection feedback signal is abnormal (error), otherwise, it is determined that the state of the corresponding processing system is normal;

[0124] Determine whether the positive half cycle and the negative half cycle of the waveform of the main system quality detection feedback signal or the backup system quality detection feedback signal are symmetrical. If the waveform of the positive half cycle and the negative half cycle are not symmetrical, it is determined that the state of the processing system corresponding to the quality detection feedback signal is abnormal (error); otherwise, it is determined that the state of the corresponding processing system is normal;

[0125] Determine whether the waveform duty ratio of the main system quality detection feedback signal or the backup system quality detection feedback signal is 1:1. If the waveform duty ratio is not 1:1, it is determined that the state of the processing system corresponding to the quality detection feedback signal is abnormal (error); otherwise, it is determined that the state of the corresponding processing system is normal;

[0126] Determine whether the waveform deformation of the returned main system quality detection feedback signal or the backup system quality detection feedback signal exceeds the preset fault tolerance threshold. If it exceeds the set fault tolerance threshold, the state of the corresponding processing system is judged to be abnormal. If it does not exceed the set fault tolerance threshold, the state of the corresponding processing system is judged to be normal.

[0127] In this embodiment, the default factory range options of the level detection fault tolerance range are [-1dB, 1dB], [-2dB, 2dB], [-3dB, 3dB], and the step accuracy is not less than 0.1dB. The level detection fault tolerance range can be adjusted in the background through the terminal connection hot backup manager.

[0128] The hot standby manager's network connection feedback detection to the processing system is shown below.

[0129] The hot backup manager sends a network connection detection signal to the processing system. The processing system receives the network connection detection signal, generates a network connection detection feedback signal, and sends the network connection detection feedback signal to the hot backup manager. The hot backup manager receives the network connection detection feedback signal, records the number of missing times of the network connection detection feedback signal from the same source within a set time period, and determines whether the number of missing times of the network connection detection feedback signal within the set time period reaches the network connection detection fault tolerance threshold. If the number of missing times of the network connection detection feedback signal within the set time period is less than or equal to the network connection detection fault tolerance threshold, it is determined that the state of the processing system from which the network connection detection feedback signal comes is normal. If the number of missing times of the network connection detection feedback signal within the set time period is greater than the network connection detection fault tolerance threshold, it is determined that the state of the processing system from which the network connection detection feedback signal comes is abnormal.

[0130] In this embodiment, the network connection detection signal is a collection of some data, which includes a code, a verification code, a random identifier, a request sequence number, filling data and the like (the network connection detection signal may be a PING command). When receiving the network connection detection signal, the device generates feedback data based on network rules according to these contents (e.g., if the content of a network connection detection signal is: type 8, code 0, verification code 0x1234, identifier 0x5678, request sequence number 0x0001, and filling data Test Data, then the content of the network connection detection feedback signal is: type 0, code 0, verification code 0x1234, identifier 0x5678, request sequence number 0x0001, and filling data Test Data). These feedback data constitute the network connection detection feedback signal (in most cases, the network connection detection signal and the corresponding network connection detection feedback signal have the same content. The only difference is that the types of the network connection detection signal and the network connection detection feedback signal are changed to distinguish the sent content from the returned content. This process does not require any calculation, so this detection method is a detection of the network performance of the detection object). The hot backup manager automatically generates a network connection detection signal, and continuously sends the network connection detection signal to the main processing system and the backup processing system at the same time interval. The time interval between sending the network connection detection signal is 0.3s-3s. The shorter the time, the higher the sensitivity requirement of the network connection feedback detection on the detection object. After receiving the network connection detection signal, the main processing system and the backup processing system generate corresponding network connection detection feedback signals one by one in the order of receipt, and return these network connection detection feedback signals to the hot backup manager one by one according to the generation time. The hot backup manager receives the network connection detection feedback signals in sequence and counts the number of network connection detection feedback signals. The counting starts after receiving the first network connection detection feedback signal. If the network connection detection feedback signal corresponding to the next network connection detection signal is not received within the interval time of the sending of the network connection detection signal, the network connection detection feedback signal is considered missing, and the number of missing times is recorded as one. If the network connection detection signal corresponding to the first network connection detection feedback signal received is not the first one sent out, the number of previously missing network connection detection feedback signals is determined according to the sending sequence number of the network connection detection signal corresponding to the first network connection detection feedback signal received, and all are recorded as missing (e.g., the sending sequence number of the network connection detection feedback signal received this time is 3, then the network connection detection feedback signals with sequence numbers 1 and 2 are determined to be missing, and the number of missing times is recorded as 2). In this way, after the network connection detection setting time period has passed, the number of missing network connection detection feedback signals returned within this network connection detection setting time period is counted, and compared with the preset network connection detection fault tolerance threshold.Normally, the default value of the network connection feedback detection fault tolerance range is 0-16. In this embodiment, the network connection detection fault tolerance threshold is 16, the network connection detection signal sending interval is 0.5s, and the network connection detection time period is set to 16s. When the number of times the network connection detection feedback signal is missing within the network connection detection set time period is greater than 16, it is determined that the state of the object (main processing system or backup processing system) that returns the network connection detection feedback signal is abnormal.

[0131] The Hot Standby Manager detects the digital response to the processing system as shown below.

[0132] The hot backup manager sends a digital response detection signal to the processing system. The processing system receives the digital response detection signal, analyzes and calculates the digital response detection signal, generates a digital response detection feedback signal according to the content of the digital response detection signal and the current state of the processing system, and sends the digital response detection feedback signal to the hot backup manager. The hot backup manager receives the digital response detection feedback signal, determines whether the content of the digital response detection feedback signal meets the preset content according to the stored data, and determines the correct digital response detection feedback signal. The hot backup manager records the number of missing times of the digital response detection feedback signal from the same source within the digital response detection, and determines whether the number of missing times of the digital response detection feedback signal within the set time period of the digital response detection reaches the digital response detection fault tolerance threshold. If the number of missing times of the digital response detection feedback signal within the set time period of the digital response detection is less than or equal to the digital response detection fault tolerance threshold, it is determined that the state of the processing system from which the digital response detection feedback signal comes is normal. If the number of missing times of the digital response detection feedback signal within the set time period of the digital response detection is greater than the digital response detection fault tolerance threshold, it is determined that the state of the processing system from which the digital response detection feedback signal comes is abnormal.

[0133] In this embodiment, the hot backup manager generates a digital response detection signal according to a preset command (the digital response detection signal is a collection of some data, which may include a general and fixed processing command, or a processing command specific to the detected processing system, and these processing commands are interspersed between multiple conventional data, such as a specific sequence code, a timestamp, an identifier, and padding data, etc.), and the hot backup manager sends the digital response detection signal to the main processing system and the backup processing system. After receiving the digital response detection signal, the main processing system and the backup processing system analyze the content data of the digital response detection signal, check the type and integrity of the digital response detection signal, and then extract the processing command that needs to be calculated, combine their own status (including service status, hardware status, network status, application status, etc.), generate new data information and form a digital response detection feedback signal (similarly, the signal representing the processing result is interspersed between other conventional data), and return the digital response detection feedback signal to the hot backup manager. The hot backup manager continuously sends the digital response detection signal to the main processing system and the backup processing system at the same time interval. The time interval between sending the digital response detection signal is 0.3s-3s. The shorter the time, the higher the sensitivity requirement for the object of this digital response detection. After receiving the digital response detection signal, the main processing system and the backup processing system generate corresponding digital response detection feedback signals one by one in the order of receiving, and return these digital response detection feedback signals to the hot backup manager one by one according to the generation time. The hot backup manager calls the correct digital response data pre-stored in the memory, which is equivalent to the correct answer to the content of the digital response detection feedback signal. The hot backup manager compares the content of the digital response detection feedback signal with the pre-stored digital response data to obtain the digital response detection feedback signal with the correct digital response content, and then judges the number of missing digital response detection feedback signals within the digital response detection setting time period based on these digital response detection feedback signals with correct content. The hot backup manager starts timing after receiving the first digital response detection feedback signal, and counts the number of missing digital response detection feedback signals within the digital response detection setting time period. The sending interval period between digital response detection signals has been determined. Whether it is network delay or network error causing signal loss, etc., it will cause the number of digital response detection feedback signals returned within the digital response detection setting time period to not match the number of digital response detection signals, and the missing part is recorded as the number of missing.The hot backup manager pre-sets the digital response detection setting time period. After determining the sending interval period of the digital response detection signal, the number of times the digital response detection signal is sent within the digital response detection setting time period can be calculated. Then, after the digital response detection setting time period has passed, the number of digital response detection feedback signals within the digital response detection setting time period is counted. The difference between the number of digital response detection feedback signals and the number of times the digital response detection signal is sent is the number of times the digital response detection feedback signal is missing. In this way, the number of times the returned digital response detection feedback signal is missing within the digital response detection setting time period is compared with the preset digital response detection fault tolerance threshold. If the number of times the digital response detection feedback signal is missing within the digital response detection setting time period is greater than the digital response detection fault tolerance threshold, it is determined that the state of the corresponding processing system is abnormal. If the number of times the digital response detection feedback signal is missing within the digital response detection setting time period is less than or equal to the digital response detection fault tolerance threshold, it is determined that the state of the corresponding processing system is normal. Normally, the default value of the digital response detection fault tolerance range is 0-16. In this embodiment, the digital response detection fault tolerance threshold is 16, the digital response detection signal sending interval is 0.5s, and the digital response detection time period is set to 16s. When the number of missing times of the returned digital response detection feedback signal within the digital response detection set time period is greater than 16, it is judged that the state of the object (main processing system or backup processing system) that returns the digital response detection feedback signal is abnormal.

[0134] The hot backup manager's detection methods for the processing system include the above-mentioned signal quality detection, network online feedback detection, and digital response detection. The operating logic of the three detection methods are pre-set in the hot backup manager. When the hot backup manager is connected to the signal processing system, the detection method can be set to any one or more of the above.

[0135] The hot backup manager has a power-off retention function. When the unit fails to work normally, the original channel switching result of the signal output remains unchanged, and the switching state maintains the final judgment result, maintaining the original signal output and normal output until the unit works normally and sends a switching control signal, and then switches the output system according to the switching control signal.

[0136] In a certain embodiment, during a certain activity, if a problem occurs in the power system, causing the local machine (hot standby manager) to lose power, the audio signal of the audio system in which the local machine participates will not be lost or interrupted, and the audio signal will continue to be transmitted in the state before the power failure, and will not affect the audio playback at the activity site. When the local machine regains power and turns on, the hot standby manager will again decide whether to change the current signal output state based on the latest detection results, such as whether to switch from the main processing system to the backup processing system, or whether to switch from the backup processing system to the main processing system. After the judgment, a switching control signal is generated to implement the switching of the processing system and change the audio signal output.

[0137] The hot backup manager sets a counter, which records the number of fault (abnormal status) detection results of the corresponding processing system. The data recorded by the counter can be maintained for a long time when the hot backup manager is not powered (in a normal temperature environment) until it is run through the reset instruction of the hot backup manager. The count record of the counter can be reset through the reset instruction of the hot backup manager, which can be called by connecting the terminal to the hot backup manager, or by setting an external control key and issuing the reset instruction manually.

[0138] In this embodiment, the hot standby manager is provided with two signal input ports (receiving signals processed by the processing system), the hot standby manager is connected to two processing systems (the main processing system and the backup processing system), and two counters are provided accordingly, the first counter correspondingly records the detection result of the main processing system, and the second counter correspondingly records the detection result of the backup processing system. When the hot standby manager detects that the main processing system is in error (abnormal state), the first counter records once, and when the hot standby manager detects that the backup processing system is in error, the second counter records once.

[0139] In another embodiment, the hot standby manager is provided with two signal input ports, the hot standby manager is connected to two processing systems (a main processing system and a backup processing system), and three counters are provided. In addition to the first counter and the second counter in the above embodiment, the three counters are provided with a total counter, and when any one of the first counter and the second counter records, the total counter records once, so that the number of counts of the total counter is the sum of the counts of the first counter and the second counter.

[0140] In another specific embodiment, the hot backup manager sets two signal input ports, the hot backup manager connects two processing systems (a main processing system and a backup processing system), and sets a total counter. When the detection result of the main processing system or the backup processing system is negative, the total counter records once.

[0141] In the hardware structure of the hot backup manager, in one embodiment, two display screens are set on the surface of the hot backup manager, and the two display screens correspond to the respective counters of the main processing system and the backup processing system, and display the count values ​​of the counters respectively; in another embodiment, a display screen is set on the surface of the hot backup manager, and the display screen corresponds to the total counter and displays the count value of the total counter.

[0142] The hot backup manager sets the display screen. The content of the display screen is any one or a combination of the following:

[0143] (1) Display the number of fault detection results of the processing system;

[0144] (2) Display the number of switching times of the processing system;

[0145] (3) Display the working status information of the hot backup manager;

[0146] (4) Setting interactive input components;

[0147] (5) Display the feedback data information of the processing system;

[0148] (6) Displaying the feedback data information of the externally connected terminal;

[0149] (7) Local performance setting component;

[0150] (8) Warning information;

[0151] (9) This unit switches the signal output channel setting key.

[0152] In this embodiment, the hot backup manager is provided with a touchable LCD screen and two independent digital display screens. The touchable LCD screen is used to input data and display the main status. The digital response detection fault tolerance threshold, network connection detection fault tolerance threshold, level detection fault tolerance range, etc. are input through the upper and lower touch screen buttons. A count reset touch screen button is also provided. After entering the password through the touch screen button of the touchable LCD screen, the count reset touch screen button can be pressed to reset the count data of the counter. The two independent digital display screens respectively display the number of times the detection result of the main processing system is a fault and the number of times the detection result of the backup processing system is a fault. In another embodiment, the two independent digital display screens respectively display the number of times the main processing system is switched to the main processing system and the number of times the backup processing system is switched to the backup processing system.

[0153] In this embodiment, when the detection result is a fault, the speaker or buzzer of the machine issues a warning, and the warning sound of the speaker or buzzer can be manually turned off through a pop-up window on the touch-sensitive LCD screen of the hot backup manager or a touch-screen button at a fixed position.

[0154] In this embodiment, the touchable LCD display is provided with a signal output channel switching touch screen button. The user can manually and forcibly switch the signal output channel by pressing the touch screen button, thereby changing the processing system for outputting processed signals to the outside, so that the hot backup manager retains the manual switching management function on the basis of the automatic switching management function.

[0155] The hot backup manager is provided with a cascade port, and the hot backup managers are cascaded through the cascade port to realize the extended connection of the processing system, thereby increasing the number of processing systems connected to the hot backup manager and the corresponding channel ports.

[0156] When the hot backup manager host and the hot backup manager slave are cascaded, the cascade output port of the hot backup manager at the upper level is connected to the cascade input port of the hot backup manager at the lower level. The hot backup manager at the first level is the hot backup manager host, and all other hot backup managers connected through the cascade port are hot backup manager slaves. The hot backup manager is divided into a hot backup manager host and a hot backup manager slave according to the connected processing system. The hot backup manager host and the hot backup manager slave are in an online state, and the hot backup manager host and the hot backup manager slave are actually merged into one system. The hot backup manager host has a detection function, processes and outputs control commands, and the hot backup manager slave receives and forwards commands issued by the hot backup manager host, expands and controls the signal output channel of the connected processing system. The number of cascaded hot backup manager slaves is unlimited, which increases the number of processing systems connected to the hot backup manager. The hot backup manager has built-in instructions for two working modes: host mode and slave mode. After the hot backup manager hardware is connected to each device, the hot backup manager can be set to run in host mode or slave mode after startup. If the running mode is set to host mode, the hot backup manager is the hot backup manager host, responsible for detecting the status of the main processing system and the backup processing system. If the hot backup manager is set to slave mode, it is the hot backup manager slave, and it forms a hot backup automatic management system with the hot backup manager host. The hot backup manager host and the hot backup manager slave are in an online state, and the two jointly control the output of the processing system, thereby realizing the switching of the processing system.

[0157] The hot backup manager is provided with an external communication interface, and the hot backup manager is connected to an external terminal through the external communication interface and realizes communication. In this embodiment, the hot backup manager is provided with a serial interface and a network interface, and realizes connection and communication with different terminal devices respectively, and sends the detection result and the local state warning information to an external third-party device. For example, the hot backup manager is connected to an external speaker system through a serial interface, so that the signal processed by the processing system is output to the external speaker system through the serial interface and is directly played through the external speaker; the hot backup manager is connected to a network switch through a network interface, realizes network connection and transmits data to various terminals on the network.

[0158] Application example 1 of the hot backup manager: Figure 2 shown.

[0159] The signal source is an audio signal source such as a microphone and a musical instrument. The signal of the audio signal source is transmitted to a passive audio signal distributor (abbreviated as audio distributor). After being processed by the passive audio signal distributor, the audio signal source generates two identical audio signals to be processed, and are respectively sent to the first digital audio processing system (audio matrix) (main processing system) through the first output end of the passive audio signal distributor and to the second digital audio processing system (audio matrix) (backup processing system) through the second output end of the passive audio signal distributor. The audio signal to be processed is processed by the first digital audio processing system to generate a first audio processing signal, and the audio signal to be processed is processed by the second digital audio processing system to generate a second audio processing signal. The first audio processing signal is sent to the hot backup manager by the first digital audio processing system via the first audio input end of the hot backup manager, and the second audio processing signal is sent to the hot backup manager by the second digital audio processing system via the second audio input end of the hot backup manager.

[0160] The hot backup manager is provided with a first audio input terminal, a second audio input terminal, a first audio detection transmitting terminal, a second audio detection transmitting terminal, a first audio detection input terminal, a second audio detection input terminal, a network interface, a serial interface, a cascade access terminal, a cascade transmitting terminal and an audio output terminal, wherein the first audio input terminal and the second audio input terminal are used to connect to a processing system that outputs an audio processing signal, the first audio detection transmitting terminal and the second audio detection transmitting terminal are used to connect to a processing system to be detected and send a detection signal, the first audio detection input terminal and the second audio detection input terminal are used to connect to a processing system to be detected and receive a feedback signal returned by the processing system to be detected, the network interface is connected to a network communication device, the serial interface is used for an external application device to output an audio signal (such as a microphone, a buzzer, etc.), the cascade access terminal and the cascade transmitting terminal are used for cascading between hot backup managers, and the audio output terminal is used to connect to a post-stage power amplifier system or an audio output system (a connection port that selectively outputs a received audio processing signal, and can select an audio processing signal sent by a main processing system or an audio processing signal sent by a backup processing system).

[0161] The first audio input terminal of the hot backup manager is connected to the first digital audio processing system, the second audio input terminal of the hot backup manager is connected to the second digital audio processing system, and the network interface of the hot backup manager is connected to the first digital audio processing system and the second digital audio processing system respectively through a network switch.

[0162] The hot backup manager sends a detection signal to the first digital audio processing system and the second digital audio processing system through the network interface and the network switch, and also receives a feedback signal returned by the first digital audio processing system and the second digital audio processing system through the network switch.

[0163] In this embodiment, the hot backup manager uses signal quality detection to detect the first digital audio processing system and the second digital audio processing system, and determines the working status of the first digital audio processing system and the second digital audio processing system respectively, realizes automatic switching between the first digital audio processing system and the second digital audio processing system, and determines whether the signal output by the audio output end is the first audio processing signal or the second audio processing signal.

[0164] The second application example of the hot backup manager is as follows: Figure 3 shown.

[0165] The signal source is an audio signal source such as a microphone and a musical instrument. The signal of the audio signal source is transmitted to a passive audio signal distributor (abbreviated as audio distributor). After being processed by the passive audio signal distributor, the audio signal source generates two identical audio signals to be processed, and are respectively sent to the first digital mixing console (main processing system) through the first output end of the passive audio signal distributor and to the second digital mixing console (backup processing system) through the second output end of the passive audio signal distributor. The audio signal to be processed is processed by the first digital mixing console to generate a first audio processing signal, and the audio signal to be processed is processed by the second digital mixing console to generate a second audio processing signal. The first audio processing signal is sent to the hot backup manager via the first audio input end of the hot backup manager by the first digital mixing console, and the second audio processing signal is sent to the hot backup manager via the second audio input end of the hot backup manager by the second digital mixing console.

[0166] The hot backup manager is provided with a first audio input terminal, a second audio input terminal, a first audio detection transmitting terminal, a second audio detection transmitting terminal, a first audio detection input terminal, a second audio detection input terminal, a network interface, a serial interface, a cascade access terminal, a cascade transmitting terminal and an audio output terminal, wherein the first audio input terminal and the second audio input terminal are used to connect to a processing system that outputs an audio processing signal, the first audio detection transmitting terminal and the second audio detection transmitting terminal are used to connect to a processing system to be detected and send a detection signal, the first audio detection input terminal and the second audio detection input terminal are used to connect to a processing system to be detected and receive a feedback signal returned by the processing system to be detected, the network interface is connected to a network communication device, the serial interface is used for an external application device to output an audio signal (such as a microphone, a buzzer, etc.), the cascade access terminal and the cascade transmitting terminal are used for cascading between hot backup managers, and the audio output terminal is used to connect to a post-stage power amplifier system or an audio output system (a connection port that selectively outputs a received audio processing signal, and can select an audio processing signal sent by a main processing system or an audio processing signal sent by a backup processing system).

[0167] The first audio input terminal of the hot backup manager is connected to the first digital mixing console, the second audio input terminal of the hot backup manager is connected to the second digital mixing console, and the network interface of the hot backup manager is connected to the first digital mixing console and the second digital mixing console respectively through a network switch.

[0168] The hot backup manager sends a detection signal to the first digital mixing console and the second digital mixing console through the network interface and the network switch, and also receives a feedback signal returned by the first digital mixing console and the second digital mixing console through the network switch.

[0169] In this embodiment, the hot backup manager uses digital response detection to detect the first digital mixing console and the second digital mixing console, and determines the respective working status of the first digital mixing console and the second digital mixing console, realizes automatic switching between the first digital mixing console and the second digital mixing console, and determines whether the signal output by the audio output end is the first audio processing signal or the second audio processing signal.

[0170] Application example 3 of the hot backup manager: Figure 4 shown.

[0171] The signal source is an audio signal source such as a microphone and a musical instrument. The signal of the audio signal source is transmitted to a passive audio signal distributor (abbreviated as audio distributor). After being processed by the passive audio signal distributor, the audio signal source generates two identical audio signals to be processed, and is respectively sent to a digital mixing console (main processing system) through the first output end of the passive audio signal distributor and to an analog mixing console (backup processing system) through the second output end of the passive audio signal distributor. The audio signal to be processed is processed by the digital mixing console to generate a first audio processing signal, and the audio signal to be processed is processed by the analog mixing console to generate a second audio processing signal. The first audio processing signal is sent to the hot backup manager via the first audio input end of the hot backup manager by the digital mixing console, and the second audio processing signal is sent to the hot backup manager via the second audio input end of the hot backup manager by the analog mixing console.

[0172] The hot backup manager is provided with a first audio input terminal, a second audio input terminal, a first audio detection transmitting terminal, a second audio detection transmitting terminal, a first audio detection input terminal, a second audio detection input terminal, a network interface, a serial interface, a cascade access terminal, a cascade transmitting terminal and an audio output terminal, wherein the first audio input terminal and the second audio input terminal are used to connect to a processing system that outputs an audio processing signal, the first audio detection transmitting terminal and the second audio detection transmitting terminal are used to connect to a processing system to be detected and send a detection signal, the first audio detection input terminal and the second audio detection input terminal are used to connect to a processing system to be detected and receive a feedback signal returned by the processing system to be detected, the network interface is connected to a network communication device, the serial interface is used for an external application device to output an audio signal (such as a microphone, a buzzer, etc.), the cascade access terminal and the cascade transmitting terminal are used for cascading between hot backup managers, and the audio output terminal is used to connect to a post-stage power amplifier system or an audio output system (a connection port that selectively outputs a received audio processing signal, and can select an audio processing signal sent by a main processing system or an audio processing signal sent by a backup processing system).

[0173] The first audio input terminal of the hot backup manager is connected to the digital mixing console, the second audio input terminal of the hot backup manager is connected to the analog mixing console, the network interface of the hot backup manager is connected to the digital mixing console via a network switch, and the second audio detection sending terminal and the second audio detection input terminal of the hot backup manager are both connected to the analog mixing console.

[0174] The hot backup manager sends a detection signal to the digital mixing console through the network interface and the network switch, and also receives a feedback signal returned by the digital mixing console through the network switch. The hot backup manager sends a detection signal to the analog mixing console through the second audio detection sending end, and receives a feedback signal returned by the analog mixing console through the second audio detection input end.

[0175] In this embodiment, the hot backup manager uses signal quality detection or network online feedback detection to detect the digital mixing console and the analog mixing console, and determines the respective working status of the digital mixing console and the analog mixing console, realizes automatic switching between the digital mixing console and the analog mixing console, and determines whether the signal output by the audio output end is the first audio processing signal or the second audio processing signal.

[0176] The fourth application example of the hot backup manager is as follows: Figure 5 shown.

[0177] The signal source is an audio signal source such as a microphone and a musical instrument. The signal of the audio signal source is transmitted to a passive audio signal distributor (abbreviated as audio distributor). After being processed by the passive audio signal distributor, the audio signal source generates two identical audio signals to be processed, and are respectively sent to the first analog mixing console (main processing system) through the first output end of the passive audio signal distributor and to the second analog mixing console (backup processing system) through the second output end of the passive audio signal distributor. The audio signal to be processed is processed by the first analog mixing console to generate a first audio processing signal, and the audio signal to be processed is processed by the second analog mixing console to generate a second audio processing signal. The first audio processing signal is sent to the hot backup manager by the first analog mixing console via the first audio input end of the hot backup manager, and the second audio processing signal is sent to the hot backup manager by the second analog mixing console via the second audio input end of the hot backup manager.

[0178] The hot backup manager is provided with a first audio input terminal, a second audio input terminal, a first audio detection transmitting terminal, a second audio detection transmitting terminal, a first audio detection input terminal, a second audio detection input terminal, a network interface, a serial interface, a cascade access terminal, a cascade transmitting terminal and an audio output terminal, wherein the first audio input terminal and the second audio input terminal are used to connect to a processing system that outputs an audio processing signal, the first audio detection transmitting terminal and the second audio detection transmitting terminal are used to connect to a processing system to be detected and send a detection signal, the first audio detection input terminal and the second audio detection input terminal are used to connect to a processing system to be detected and receive a feedback signal returned by the processing system to be detected, the network interface is connected to a network communication device, the serial interface is used for an external application device to output an audio signal (such as a microphone, a buzzer, etc.), the cascade access terminal and the cascade transmitting terminal are used for cascading between hot backup managers, and the audio output terminal is used to connect to a post-stage power amplifier system or an audio output system (a connection port that selectively outputs a received audio processing signal, and can select an audio processing signal sent by a main processing system or an audio processing signal sent by a backup processing system).

[0179] The first audio input terminal of the hot backup manager is connected to the first analog mixing console, the second audio input terminal of the hot backup manager is connected to the second analog mixing console, the first audio detection sending terminal and the first audio detection input terminal of the hot backup manager are both connected to the first analog mixing console, and the second audio detection sending terminal and the second audio detection input terminal of the hot backup manager are both connected to the second analog mixing console.

[0180] The hot backup manager sends a detection signal to the first analog mixing console through the first audio detection transmitting end, and receives a feedback signal returned by the first analog mixing console through the first audio detection input end. The hot backup manager sends a detection signal to the second analog mixing console through the second audio detection transmitting end, and receives a feedback signal returned by the second analog mixing console through the second audio detection input end.

[0181] In this embodiment, the hot backup manager uses signal quality detection to detect the first analog mixing console and the second analog mixing console, and determines the respective working states of the first analog mixing console and the second analog mixing console, realizes automatic switching between the first analog mixing console and the second analog mixing console, and determines whether the signal output by the audio output end is the first audio processing signal or the second audio processing signal.

[0182] Application Example 5 of the hot backup manager: Figure 6 shown.

[0183] The hot backup manager is provided with a first audio input terminal, a second audio input terminal, a first audio detection transmitting terminal, a second audio detection transmitting terminal, a first audio detection input terminal, a second audio detection input terminal, a network interface, a serial interface, a cascade access terminal, a cascade transmitting terminal and an audio output terminal, wherein the first audio input terminal and the second audio input terminal are used to connect to a processing system that outputs an audio processing signal, the first audio detection transmitting terminal and the second audio detection transmitting terminal are used to connect to a processing system to be detected and send a detection signal, the first audio detection input terminal and the second audio detection input terminal are used to connect to a processing system to be detected and receive a feedback signal returned by the processing system to be detected, the network interface is connected to a network communication device, the serial interface is used for an external application device to output an audio signal (such as a microphone, a buzzer, etc.), the cascade access terminal and the cascade transmitting terminal are used for cascading between hot backup managers, and the audio output terminal is used to connect to a post-stage power amplifier system or an audio output system (a connection port that selectively outputs a received audio processing signal, and can select an audio processing signal sent by a main processing system or an audio processing signal sent by a backup processing system).

[0184] The cascade sending end of the first-level hot backup manager is connected to the cascade access end of the second-level hot backup manager, and the cascade sending end of the second-level hot backup manager is connected to the cascade access end of the third-level hot backup manager, completing the cascade of the three-level hot backup managers.

[0185] Application Example 6 of the hot backup manager: Figure 7 shown.

[0186] The analog signal source is connected to the first digital networked audio system (main processing system) and the second digital networked audio system (backup processing system) respectively through a passive audio distributor. The first digital networked audio system and the second digital networked audio system are both connected to a network switch. The network switch is connected to a hot standby manager. The network switch is also connected to a digital network signal source. The network switch is connected to an audio output terminal through a network audio switching device.

[0187] Analog signal sources such as microphones and musical instruments are audio signal sources. The signals of the audio signal sources are transmitted to the passive audio signal distributor. After being processed by the passive audio signal distributor, the audio signal sources generate two identical audio signals to be processed, which are respectively sent to the first digital networked audio system and the second digital networked audio system. The first digital networked audio system and the second digital networked audio system are both connected to the network switch and realize signal mutual transmission. The network switch is also connected to a hot backup manager. The hot backup manager sends a detection signal to the first digital networked audio system and the second digital networked audio system through the network switch. After receiving the detection signal, the first digital networked audio system and the second digital networked audio system generate a feedback signal. The feedback signal is transmitted back to the hot backup manager through the network switch. The hot backup manager receives the feedback signal for detection, determines the state of the processing system, and outputs the detection result and the switching control command through the network switch. In addition, the network switch is also connected to a digital network signal source. The signal of the digital network signal source is transmitted to the first digital networked audio system and the second digital networked audio system through the network switch, and is processed by the first digital networked audio system and the second digital networked audio system respectively. The network switch is connected to the audio output end through the network audio switching device. The hot backup manager outputs the detection results and switching control commands to the network audio switching device through the network switch. The network audio switching device receives the detection results and switching control commands sent by the hot backup manager, and realizes the switching of external signal output according to the switching method of the signal output channel of the network audio switching device.

[0188] In addition, in other embodiments, the serial interface of the hot backup manager is connected to the first digital networked audio system and the second digital networked audio system respectively, and the hot backup manager sends detection signals to the first digital networked audio system and the second digital networked audio system through the serial interface, and receives feedback signals sent back by the first digital networked audio system and the second digital networked audio system.

[0189] Regardless of whether the detection signal and feedback signal are transmitted through a network switch or transmitted through a network switch, the detection method of the hot standby manager is any one or more combinations of signal quality detection, network connection feedback detection, and digital response detection.

[0190] In the above process, the hot backup manager only processes the system's detection and output results, warnings and other information, and does not serve as a channel for audio signal output, nor does it manage the switching of the processing system. This allows the hot backup manager to be embedded in other audio hot backup systems and used as a detection tool.

[0191] Application Example 7 of the hot backup manager: Figure 8 shown.

[0192] The hot backup manager is provided with a first audio input terminal, a second audio input terminal, a first audio detection sending terminal, a second audio detection sending terminal, a first audio detection input terminal, a second audio detection input terminal, a network interface, a serial interface, a cascade access terminal, a cascade sending terminal and an audio output terminal. Among them, the first audio input terminal and the second audio input terminal are connected to the main performance audio system and the fire alarm system that output audio processing signals, the network interface and the serial interface are both connected to the fire control system, and the audio output terminal is used to connect to the post-stage power amplifier system.

[0193] Under normal circumstances, the signal output by the main output audio system (audio amplification system used for cultural performances, etc.) is input to the hot backup manager from the first audio input terminal, and the fire alarm system continuously inputs alarm audio to the second audio input terminal. The hot backup manager directly transmits the signal from the output audio system to the subsequent power amplifier system through the audio output terminal, and does not output the alarm audio input by the fire alarm system. When the fire control system is started, it outputs the fire alarm signal to the hot backup manager through the serial interface or the network interface or both. The hot backup manager switches the signal output channel, stops the output of the main output audio system, and outputs the alarm audio input by the fire alarm system to the subsequent power amplifier system, which becomes a fire broadcast.

[0194] In the above process, the hot backup manager only switches the output channel of the audio system, and automatically switches the signal output channel after receiving the fire alarm signal from the fire control system. The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A manager for an audio sound reinforcement hot backup system, characterized in that: The processing system of the audio sound reinforcement hot backup system includes a main processing system and at least one backup processing system. The signals generated by the main processing system and the backup processing system are output to the outside through the hot backup manager. The hot standby manager generates a detection signal according to the preset detection logic and sends the detection signal to the processing system. The processing system generates a feedback signal according to the content of the detection signal generated by the hot standby manager, and returns the feedback signal to the hot standby manager. The hot backup manager obtains the detection result according to the content of the feedback signal, and determines whether to switch the signal output channel according to the detection result. The preset detection method is any one or more combinations of signal quality detection, network connection feedback detection, and digital response detection.

2. A manager for an audio sound reinforcement hot backup system according to claim 1, characterized in that: The hot standby manager generates a quality detection signal and sends the quality detection signal to each processing system. The processing system receives the quality detection signal, processes the quality detection signal and generates a quality detection feedback signal, and the processing system sends the quality detection feedback signal to the hot backup manager. The hot backup manager receives the quality detection feedback signal, analyzes the signal strength and spectrum characteristics of the quality detection feedback signal sent by each processing system, calculates whether the level strength and waveform deformation of the quality detection feedback signal are within the quality detection fault tolerance range, and determines the status of the processing system that returns the quality detection feedback signal based on the calculation results.

3. A manager for an audio sound reinforcement hot backup system according to claim 2, characterized in that: The hot backup manager pre-sets an adjustable level detection fault tolerance range and an adjustable waveform deformation threshold. The hot backup manager performs delay correction and phase correction on the waveform image of the quality detection feedback signal, and obtains the information data of the quality detection feedback signal. The hot standby manager performs the following tests on the quality detection feedback signal: (1) The hot standby manager determines whether the level strength of the quality detection feedback signal is within the level detection fault tolerance range. If the level strength of the quality detection feedback signal exceeds the level detection fault tolerance range, the hot standby manager determines that the state of the processing system corresponding to the quality detection feedback signal is abnormal. If the level strength of the quality detection feedback signal is within the level detection fault tolerance range, the hot standby manager determines that the state of the processing system corresponding to the quality detection feedback signal is normal. (2) The hot backup manager confirms the smoothness of the waveform image of the quality detection feedback signal. If there is a voltage mutation in the waveform image of the quality detection feedback signal, it is considered that the waveform image of the quality detection feedback signal is not smooth, and it is determined that the processing system state corresponding to the quality detection feedback signal is abnormal; (3) The hot backup manager confirms the symmetry of the waveform image of the quality detection feedback signal. If the positive half cycle and the negative half cycle of the waveform image of the quality detection feedback signal are asymmetric, it is considered that the waveform image of the quality detection feedback signal is asymmetric, and it is determined that the state of the processing system corresponding to the quality detection feedback signal is abnormal; (4) The hot backup manager confirms the symmetry of the waveform image of the quality detection feedback signal. If the waveform duty ratio of the quality detection feedback signal is not 1:1, it is considered that the waveform image of the quality detection feedback signal is asymmetric, and it is determined that the state of the processing system corresponding to the quality detection feedback signal is abnormal; (5) The hot standby manager confirms the periodicity of the waveform image of the quality detection feedback signal, If the period of the quality detection feedback signal is inconsistent with the period of the quality detection signal, it is considered that the periodicity of the waveform image of the quality detection feedback signal is abnormal, and it is determined that the state of the processing system corresponding to the quality detection feedback signal is abnormal; (6) The hot backup manager determines whether the waveform deformation amount of the quality detection feedback signal is less than the waveform deformation threshold. If the waveform deformation amount of the quality detection feedback signal is less than or equal to the waveform deformation threshold, the hot backup manager determines that the state of the processing system corresponding to the quality detection feedback signal is normal. If the waveform deformation amount of the quality detection feedback signal is greater than the waveform deformation threshold, the hot backup manager determines that the state of the processing system corresponding to the quality detection feedback signal is abnormal.

4. A manager for an audio sound reinforcement hot backup system according to claim 1, characterized in that: The hot standby manager sends a network connection detection signal to the processing system. The processing system receives the network connection detection signal, generates a network connection detection feedback signal, and sends the network connection detection feedback signal to the hot standby manager. The hot backup manager receives the network connection detection feedback signal, records the number of times the network connection detection feedback signal from the same source is missing within a set time period of the network connection detection, and determines whether the number of times the network connection detection feedback signal is missing within the set time period of the network connection detection reaches a fault tolerance threshold of the network connection detection. If the number of times the network connection detection feedback signal is missing within the set time period of the network connection detection is less than or equal to the fault tolerance threshold of the network connection detection, it is determined that the state of the processing system from which the network connection detection feedback signal comes is normal. If the number of times the network connection detection feedback signal is missing within the set time period of the network connection detection is greater than the fault tolerance threshold of the network connection detection, it is determined that the state of the processing system from which the network connection detection feedback signal comes is abnormal.

5. A manager for an audio sound reinforcement hot backup system according to claim 1, characterized in that: The hot standby manager sends a digital response detection signal to the processing system. The processing system receives the digital response detection signal, analyzes and calculates the digital response detection signal, generates a digital response detection feedback signal according to the content of the digital response detection signal and the current state of the processing system, and sends the digital response detection feedback signal to the hot standby manager. The hot backup manager receives the digital response detection feedback signal, determines whether the content of the digital response detection feedback signal conforms to the pre-stored content according to the stored data, and determines the correct digital response detection feedback signal. The hot backup manager records the number of times the digital response detection feedback signal from the same source is missing during the digital response detection, and determines whether the number of times the digital response detection feedback signal is missing during the set time period of the digital response detection reaches the digital response detection fault tolerance threshold. If the number of times the digital response detection feedback signal is missing during the set time period of the digital response detection is less than or equal to the digital response detection fault tolerance threshold, it is determined that the state of the processing system of the source of the digital response detection feedback signal is normal. If the number of times the digital response detection feedback signal is missing during the set time period of the digital response detection is greater than the digital response detection fault tolerance threshold, it is determined that the state of the processing system of the source of the digital response detection feedback signal is abnormal.

6. A manager for an audio sound reinforcement hot backup system according to claim 1, characterized in that: When the machine fails to work normally, the original channel switching result of the signal output remains unchanged, and the switching state maintains the final judgment result, maintaining the original signal output and normal output quality until the machine resumes normal operation and sends a switching control signal, and then switches the output system according to the switching control signal.

7. A manager for an audio sound reinforcement hot backup system according to claim 1, characterized in that: The hot backup manager is provided with a counter and a display screen, and the counter records the number of fault detection results of the corresponding processing system.

8. A manager for an audio sound reinforcement hot backup system according to claim 1, characterized in that: The hot backup manager sets the display screen. The content of the display screen is any one or a combination of the following: (1) Display the number of fault detection results of the processing system; (2) Display the number of switching times of the processing system; (3) Display the working status information of the hot backup manager; (4) Set up interactive input components; (5) Display the feedback data information of the processing system; (6) Display the feedback data information of the externally connected terminal; (7) Local performance setting component; (8) Warning information; (9) This unit switches the signal output channel setting key.

9. A manager for an audio sound reinforcement hot backup system according to claim 1, characterized in that: The hot backup manager is provided with an external communication interface, through which the hot backup manager is connected to an external terminal and realizes communication, and the communication content includes the detection result and warning information of the hot backup manager on the processing system.

10. A manager for an audio sound reinforcement hot backup system according to claim 1, characterized in that: The hot backup manager is provided with a cascading port, and the hot backup managers are cascaded through the cascading port to realize the extended connection of the processing system. The number of cascaded hot backup managers is unlimited, so that the number of ports of the processing system connected to the hot backup manager is increased.

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