A monitoring device and method for testing the operating state of a system

Abstract

The present application belongs to the field of aviation test, and particularly relates to a monitoring device and method for testing system working state, using the monitoring device for testing system working state, powering on the monitoring device, configuring the XML file of the working monitoring device or calling the XML file already configured in the monitoring device before formal work; loading the working configuration parameters to the monitored equipment according to the XML file, controlling the monitored equipment to restart and take effect and starting normal work according to the configuration parameters; analyzing the data flow of the monitored equipment; monitoring the H.264 decoding and display of the video data output by the monitored equipment, working state parameter, video decoding data record and abnormal data alarm display. The present application simultaneously monitors the working state of various monitored network interface equipment (collectors and recorders) and PCM encoders on the airplane and displays in real time, alarms the parameters exceeding the early warning state, and stores the working state data for subsequent rapid analysis.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of aviation test, and particularly relates to a monitoring device and method for testing system working state. BACKGROUND

[0002] The importance of airborne test system for flight test is self-evident, various collectors, recorders and PCM encoding are applied to the flight test task of the aircraft, but such devices are unobservable, and it is difficult to monitor the real-time working state of such devices, once the device has a problem, the flight test data collection fails.

[0003] With the continuous development of airborne test system, the safety and health demand is more urgent, and the test data needs to be monitored, displayed, alarmed and the like in real time. Under this background, the monitoring device for testing system working state is very necessary. SUMMARY

[0004] The present application aims at the above problems, and proposes a monitoring device and method for testing system working state.

[0005] The technical scheme of the present application is characterized in that:

[0006] The present application proposes a monitoring device for testing system working state.

[0007] A monitoring device for testing system working state comprises a functional processing board, a core board, a solid state disk and a display screen connected with the functional processing board respectively; the functional processing board and the core board are connected through a functional processing board docking connector; the core board is a core board loaded with a windows operating system and a working state monitoring software running on the windows operating system;

[0008] The functional processing board comprises an FPGA logic processing unit, a power supply processing module, a differential PCM signal input module, a single-ended PCM signal input module, an indicator light driving circuit, a USB controller and a watchdog signal reset module connected with the FPGA logic processing unit respectively; the USB controller and the watchdog signal reset module are connected to the functional processing board docking connector;

[0009] It also comprises an externally monitored PCM encoder, the differential PCM signal input module is connected to the PCM encoder through a differential PCM connector provided on the device panel, and the single-ended PCM signal input module is connected to the PCM encoder through a single-ended PCM connector provided on the device panel;

[0010] The function processing board docking connector is also connected with a key circuit board, a USB power control switch, an Ethernet transformer, a SATA2 interface and a FFC / FPC interface, the SATA2 interface is connected to a solid state disk, and the FFC / FPC interface is connected to a display screen.

[0011] The function quick keys on the equipment panel are connected through the key circuit board, the USB interface on the equipment panel is connected through the USB power control switch, and the Ethernet connector on the equipment panel is connected through the Ethernet transformer.

[0012] The power supply processing module comprises a protection circuit, an EMI filter, a power conversion module and a secondary power conversion module connected in sequence, the input end of the protection circuit is connected to a 28V power supply on an airplane through a connector on a panel, the FPGA logic processing unit is connected between the power conversion module and the secondary power conversion module, and the output end of the secondary power conversion module is connected to the FPGA logic processing unit, a differential PCM signal input module, a single-ended PCM signal input module, an indicator light driving circuit, a USB controller and a watchdog signal reset module.

[0013] The differential PCM signal input module comprises an RS422 interface conversion circuit, one end of the RS422 interface conversion circuit is connected to a differential PCM signal of a PCM encoder through a differential PCM connector on an equipment panel, and the other end is connected to the FPGA logic processing unit.

[0014] The single-ended PCM signal input module comprises a single-ended receiver, one end of the single-ended receiver is connected to a single-ended PCM signal of a PCM encoder through a single-ended PCM connector on an equipment panel, and the other end is connected to the FPGA logic processing unit.

[0015] The indicator light driving circuit comprises a level conversion circuit, one end of the level conversion circuit is connected to the FPGA logic processing unit, and the other end is connected with an indicator light; the indicator light comprises a power indicator light, a working state indicator light and a PCM input indicator light.

[0016] The watchdog signal reset module comprises an RS232 interface conversion circuit, one end of the RS232 interface conversion circuit is connected to the FPGA logic processing unit, and the other end is connected to the function processing board docking connector.

[0017] The core board is a COMe TYPE-10 industrial standard board, the solid state disk is a 2.5-inch industrial solid state disk, and the display screen is an 8.4-inch industrial LVDS liquid crystal touch screen.

[0018] The application provides a monitoring method for testing the working state of a system.

[0019] A monitoring method for testing system working state, using the monitoring device for testing system working state as described above, the RS232 interface conversion circuit converts the watchdog signal reset power signal formed by the RS232 format watchdog command sent by the core board through the functional processing board docking connector, the FPGA logic processing unit receives the watchdog signal reset power signal, controls the opening and closing of the circuit between the power conversion module and the secondary power conversion module, and controls the lighting of the indicator light;

[0020] The FPGA logic processing unit receives the differential PCM signal or the single-ended PCM signal and converts it into a USB protocol;

[0021] The USB controller converts the PCM data of the USB protocol sent by the FPGA logic processing unit to the functional processing board docking connector;

[0022] Among them, the power indicator light is lit when the FPGA logic processing unit detects that the power is working normally; the working state indicator light is lit when the FPGA logic processing unit normally receives the watchdog signal reset power signal; the PCM input indicator light is lit when the FPGA logic processing unit normally receives the differential PCM signal or single-ended PCM signal data and clock;

[0023] The key circuit board drives the function keys on the equipment panel, and accesses the IO port of the core board through the functional processing board docking connector;

[0024] The USB power control switch introduces the USB interface of the core board into the equipment panel through the functional processing board docking connector;

[0025] The Ethernet transformer introduces the network signal of the core board into the equipment panel through the functional processing board docking connector;

[0026] The FFC / FPC interface connects the LVDS signal of the core board to the display screen through the functional processing board docking connector.

[0027] A monitoring method for testing system working state, using the monitoring device for testing system working state as described above, the method is as follows:

[0028] Step 1: Power on the monitoring device for testing system working state, and configure the XML file of the working monitoring device or call the XML file already configured in the monitoring device before formal work;

[0029] Step 2: Load the working configuration parameters of the monitored device according to the XML file, control the monitored device to restart and take effect, and start normal work according to the configuration parameters;

[0030] Step 3: Analyze the data stream of the monitored device;

[0031] Step 4: Monitor the H.264 decoding and display of the video data output by the monitored device, the working status parameters, the video decoding data record and the abnormal data alarm display.

[0032] The data stream of the PCM encoder is a PCM data stream, and the parsing of the PCM data stream is achieved by the FPGA logic processing unit, and the specific method is as follows:

[0033] The monitoring device is powered on, the FPGA logic processing unit is started, and initialization is performed;

[0034] It is judged whether there is a configuration parameter in the read cache of the USB controller:

[0035] If not, wait until the configuration parameter is completed;

[0036] If yes, read the data in the cache of the USB controller; configure the working parameters of the PCM encoder according to the content of the data;

[0037] According to the working parameters of the PCM encoder, find the main frame synchronization word and the first sub-frame; read the data of the PCM encoder and write it into the USB controller in 16 bits; when the data in a main frame is not written, repeatedly read the data of the PCM encoder and write it into the USB controller in 16 bits; when a main frame is written, find the next main frame.

[0038] The working parameters configured by the PCM encoder include the device ID of the PCM encoder, the PCM bit rate, the PCM synchronization word, the main frame length, the sub-frame length, the PCM channel number, and whether to send, the multicast address, the port number;

[0039] The working parameters monitored by the PCM encoder include the device ID of the PCM encoder, the PCM bit rate, the PCM synchronization word, the main frame length, the sub-frame length, the PCM channel number, and whether to send, the multicast address, the port number, and the sending state of each channel of the PCM;

[0040] The sending state of each channel of the PCM is normally displayed in green and safe, and if the sending state is abnormal, it is displayed in red alarm;

[0041] If the decoding data of the PCM encoder received is consistent with the requirement of the configuration file, it is determined that the sending state of each channel of the PCM is normal, otherwise it is abnormal.

[0042] When the monitored network interface device is a collector, the working parameters configured by the collector include the device ID, channel, collection resolution, frame rate, code rate, encoding mode, network output, file record, file segmentation length, multicast address and multicast port of each collector;

[0043] The working parameters monitored by the collector include device ID, channel, collection resolution, frame rate, code rate, encoding mode, network output, file record, file length, multicast address and multicast port of each collector.

[0044] The working states monitored by the collector include recording state, video network output state, time code state and disk remaining size state; red alarm is given when the recording state, video network output state and time code state information are not received according to the configuration file; red alarm of disk remaining capacity is given when the disk capacity is less than 1GB.

[0045] When the monitored network interface device is the recorder, the working parameters configured by the recorder include device ID of the recorder, device ID, channel, file segment, multicast address, multicast port and file record of the collector recorded by the recorder.

[0046] The working parameters monitored by the recorder include device ID of the recorder, device ID, channel, file segment, multicast address, multicast port and file record of the collector recorded by the recorder.

[0047] The working states monitored by the recorder include recording state and disk remaining size state; red alarm is given when the recording state is not received according to the configuration file; red alarm of disk remaining capacity is given when the disk capacity is less than 1GB.

[0048] The H.264 decoding adopts FFMPEG; the video data output by the monitored device is compressed into H.264 format, and is converted into YUV420P after H.264 decoding, and DirectDraw method is adopted during display.

[0049] When the working state monitoring software sends the dog feeding instruction, under normal working condition, the working state monitoring software sends the dog feeding instruction to the FPGA logic processing unit through the RS232 interface conversion circuit at a time interval of 300ms, the FPGA logic processing unit controls the power conversion module to normally output, and the power conversion module and the secondary power conversion module are connected; when the monitoring device crashes or works abnormally, the FPGA logic processing unit does not receive the dog feeding instruction, then the PPGA logic processing unit controls the power conversion module to cut off the output, and the monitoring device restarts.

[0050] The technical effect of the present application is that:

[0051] The present application simultaneously monitors the working states of various monitored network interface devices (collectors and recorders) and PCM encoders on the aircraft and displays in real time, alarms the parameters exceeding the early warning state, stores the working state data for subsequent rapid analysis; the working parameters of the monitored devices can also be configured before the test task starts.

[0052] 1) Real-time working state monitoring of network interface collector and recorder is realized, and alarm is given when threshold is exceeded or working state monitoring is abnormal, and working state data can be recorded, so as to facilitate fault after-inquiry;

[0053] 2) Receiving, display and monitoring of PCM data stream of PCM encoder can be realized, and an effective PCM data checking method is provided;

[0054] 3) The monitoring device is maintained to work normally through feeding dog instruction, and forced power-off and restart can be controlled in the case that the monitoring device works abnormally or working state monitoring software crashes. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 A connection block diagram of a monitoring device for testing system working state is provided for the embodiment of the present application.

[0056] Figure 2 A principle diagram of a function processing board of a monitoring device for testing system working state is provided for the embodiment of the present application.

[0057] Figure 3 A monitoring method flow chart for testing system working state is provided for the embodiment of the present application.

[0058] Figure 4 A PCM data analysis method flow chart of a monitoring device for testing system working state is provided for the embodiment of the present application. DETAILED DESCRIPTION

[0059] Embodiment 1

[0060] A monitoring device for testing system working state comprises a function processing board, a core board, a solid state disk and a display screen connected with the function processing board respectively; the function processing board and the core board are connected through a function processing board docking connector; the core board is a core board loaded with a windows operating system and working state monitoring software running on the windows operating system;

[0061] The function processing board comprises an FPGA logic processing unit and a power supply processing module, a differential PCM signal input module, a single-ended PCM signal input module, an indicator light driving circuit, a USB controller and a dog feeding signal reset module connected with the FPGA logic processing unit respectively; the USB controller and the dog feeding signal reset module are connected to the function processing board docking connector.

[0062] The differential PCM signal input module is connected to the PCM encoder through a differential PCM connector provided on the equipment panel, and the single-ended PCM signal input module is connected to the PCM encoder through a single-ended PCM connector provided on the equipment panel;

[0063] The function processing board docking connector is further connected with a key circuit board, a USB power control switch, an Ethernet transformer, a SATA2 interface and an FFC / FPC interface, the SATA2 interface is connected to a solid state disk, and the FFC / FPC interface is connected to a display screen;

[0064] The function quick keys on the equipment panel are connected through the key circuit board, the USB interface on the equipment panel is connected through the USB power control switch, and the Ethernet connector on the equipment panel is connected through the Ethernet transformer, and the Ethernet connector is connected to an externally monitored network interface device, the monitored network interface device includes a collector and a recorder.

[0065] The power supply processing module includes a protection circuit, an EMI filter, a power conversion module and a secondary power conversion module connected in sequence; the input end of the protection circuit is connected to a 28V power supply on the aircraft through a connector on the panel, the FPGA logic processing unit is connected between the power conversion module and the secondary power conversion module, and the output end of the secondary power conversion module is connected to the FPGA logic processing unit, the differential PCM signal input module, the single-ended PCM signal input module, the indicator light driving circuit, the USB controller and the dog feeding signal reset module.

[0066] The differential PCM signal input module includes an RS422 interface conversion circuit, one end of the RS422 interface conversion circuit is connected to the differential PCM signal of the PCM encoder through the differential PCM connector on the equipment panel, and the other end is connected to the FPGA logic processing unit;

[0067] The single-ended PCM signal input module includes a single-ended receiver, one end of the single-ended receiver is connected to the single-ended PCM signal of the PCM encoder through the single-ended PCM connector on the equipment panel, and the other end is connected to the FPGA logic processing unit;

[0068] The indicator light driving circuit includes a level conversion circuit, one end of the level conversion circuit is connected to the FPGA logic processing unit, and the other end is connected with an indicator light; the indicator light includes a power indicator light, a working state indicator light and a PCM input indicator light;

[0069] The dog feeding signal reset module includes an RS232 interface conversion circuit, one end of the RS232 interface conversion circuit is connected to the FPGA logic processing unit, and the other end is connected to the function processing board docking connector.

[0070] The core board is a COMe TYPE-10 industrial standard board, the solid state disk is a 2.5-inch industrial solid state disk, and the display screen is an 8.4-inch industrial LVDS liquid crystal touch screen.

[0071] The monitoring method for testing the working state of a system uses the monitoring device for testing the working state of a system as described above, the RS232 interface conversion circuit converts the dog feeding signal reset power signal formed by the RS232 format dog feeding instruction sent by the core board through the functional processing board docking connector, the FPGA logic processing unit receives the dog feeding signal reset power signal, controls the opening and closing of the circuit between the power conversion module and the secondary power conversion module, and controls the lighting of the indicator lamp;

[0072] The FPGA logic processing unit receives the differential PCM signal or the single-ended PCM signal and converts it into a USB protocol;

[0073] The USB controller converts the PCM data of the USB protocol sent by the FPGA logic processing unit to the functional processing board docking connector;

[0074] The power indicator lamp is lit when the FPGA logic processing unit detects that the power is working normally; the working state indicator lamp is lit when the FPGA logic processing unit normally receives the dog feeding signal reset power signal; and the PCM input indicator lamp is lit when the FPGA logic processing unit normally receives the differential PCM signal or the single-ended PCM signal data and clock;

[0075] The key circuit board drives the functional keys on the equipment panel, and accesses the IO port of the core board through the functional processing board docking connector;

[0076] The USB power control switch introduces the USB interface of the core board into the equipment panel through the functional processing board docking connector;

[0077] The Ethernet transformer introduces the network signal of the core board into the equipment panel through the functional processing board docking connector;

[0078] The FFC / FPC interface accesses the LVDS signal of the core board to the display screen through the functional processing board docking connector.

[0079] Embodiment 2

[0080] A monitoring method for testing the working state of a system uses the monitoring device for testing the working state of a system as described above, and the method is as follows:

[0081] Step 1: power on the monitoring device for testing the working state of a system, and configure the XML file for the working of the monitoring device or call the XML file already configured in the monitoring device before formal work;

[0082] Step 2: According to the XML file, the working configuration parameters are loaded to the monitored device, the monitored device is restarted to take effect, and the normal work is started according to the configuration parameters;

[0083] Step 3: The data stream of the monitored device is parsed;

[0084] Step 4: The H.264 decoding and display of the video data output by the monitored device, the working state parameters, the video decoding data record and the abnormal data alarm display.

[0085] The data stream of the PCM encoder is a PCM data stream, and the parsing of the PCM data stream is realized by the FPGA logic processing unit, and the specific method is as follows:

[0086] The monitoring device is powered on, the FPGA logic processing unit is started, and the initialization is performed;

[0087] It is judged whether there are configuration parameters in the read buffer of the USB controller:

[0088] If not, wait until the configuration parameters are completed;

[0089] If yes, read the data in the USB controller buffer; configure the working parameters of the PCM encoder according to the content of the data;

[0090] According to the working parameters of the PCM encoder, the main frame synchronization word and the first sub-frame are found; the data of the PCM encoder is read and written into the USB controller in 16 bits; when the data in a main frame is not written, the data of the PCM encoder is repeatedly read and written into the USB controller in 16 bits; when a main frame is written, the next main frame is found.

[0091] The working parameters configured by the PCM encoder include the device ID of the PCM encoder, the PCM bit rate, the PCM synchronization word, the main frame length, the sub-frame length, the PCM channel number and whether to send, the multicast address, the port number;

[0092] The working parameters monitored by the PCM encoder include the device ID of the PCM encoder, the PCM bit rate, the PCM synchronization word, the main frame length, the sub-frame length, the PCM channel number and whether to send, the multicast address, the port number and the sending state of each PCM channel;

[0093] Among them, the sending state of each PCM channel is normally displayed in green safety, and if the sending state is abnormal, it is displayed in red alarm;

[0094] If the received decoding data of the PCM encoder is consistent with the requirement of the configuration file, it is determined that the sending state of each PCM channel is normal, otherwise it is abnormal.

[0095] When the monitored network interface device is the collector, the working parameters configured for the collector include device ID, channel, collection resolution, frame rate, code rate, encoding mode, network output, file record, file segment length, multicast address and multicast port of each collector;

[0096] The working parameters monitored by the collector include device ID, channel, collection resolution, frame rate, code rate, encoding mode, network output, file record, file length, multicast address and multicast port of each collector;

[0097] The working states monitored by the collector include record state, video network output state, time code state and disk remaining size state; red alarm is given when the record state, video network output state and time code state information are not received according to the configuration file; red alarm is given when the disk remaining capacity is less than 1 GB.

[0098] When the monitored network interface device is the recorder, the working parameters configured for the recorder include device ID, collector device ID, channel, file segment, multicast address, multicast port and file record of the recorder;

[0099] The working parameters monitored by the recorder include device ID, collector device ID, channel, file segment, multicast address, multicast port and file record of the recorder;

[0100] The working states monitored by the recorder include record state and disk remaining size state; red alarm is given when the record state is not received according to the configuration file; red alarm is given when the disk remaining capacity is less than 1 GB.

[0101] The H.264 decoding adopts FFMPEG; the video data output by the monitored device is compressed into H.264 format, and is converted into YUV420P after H.264 decoding, and DirectDraw method is adopted during display.

[0102] When the working state monitoring software sends the dog feeding instruction, under normal working condition, the working state monitoring software sends the dog feeding instruction to the FPGA logic processing unit through the RS232 interface conversion circuit at a time interval of 300 ms, the FPGA logic processing unit controls the power conversion module to normally output, and the power conversion module and the secondary power conversion module are connected; when the monitoring device crashes or works abnormally, the FPGA logic processing unit does not receive the dog feeding instruction, the FPGA logic processing unit controls the power conversion module to cut off the output, and the monitoring device restarts.

Claims

1. A monitoring device for testing the working state of a system, characterized in that: The device comprises a function processing board, a core board, a solid state disk and a display screen connected with the function processing board respectively; the function processing board is connected with the core board through a function processing board docking connector; the core board is loaded with a windows operating system and a work state monitoring software running on the windows operating system; The function processing board comprises an FPGA logic processing unit, a power supply processing module, a differential PCM signal input module, a single-ended PCM signal input module, an indicator light driving circuit, a USB controller and a watchdog signal reset module connected with the FPGA logic processing unit respectively; the USB controller and the watchdog signal reset module are connected to the function processing board docking connector; The device further comprises an externally monitored PCM encoder, the differential PCM signal input module is connected to the PCM encoder through a differential PCM connector provided on a device panel, and the single-ended PCM signal input module is connected to the PCM encoder through a single-ended PCM connector provided on the device panel; The function processing board docking connector is further connected with a key circuit board, a USB power supply control switch, an Ethernet transformer, a SATA2 interface and an FFC / FPC interface; the SATA2 interface is connected to the solid state disk, and the FFC / FPC interface is connected to the display screen; The function quick keys on the device panel are connected through the key circuit board, the USB interface on the device panel is connected through the USB power supply control switch, and the Ethernet connector on the device panel is connected through the Ethernet transformer; the Ethernet connector is connected to an externally monitored network interface device, and the monitored network interface device comprises a collector and a recorder.

2. The monitoring device for testing system working state according to claim 1, characterized in that: The power supply processing module comprises a protection circuit, an EMI filter, a power conversion module and a secondary power conversion module connected in sequence; the input end of the protection circuit is connected to a 28V power supply on an airplane through a connector on a panel; the FPGA logic processing unit is connected between the power conversion module and the secondary power conversion module; and the output end of the secondary power conversion module is connected to the FPGA logic processing unit, the differential PCM signal input module, the single-ended PCM signal input module, the indicator light driving circuit, the USB controller and the watchdog signal reset module respectively.

3. The monitoring device for testing system working state according to claim 2, characterized in that: The differential PCM signal input module comprises an RS422 interface conversion circuit; one end of the RS422 interface conversion circuit is connected to a differential PCM signal of the PCM encoder through a differential PCM connector on a device panel; and the other end is connected to the FPGA logic processing unit; The single-ended PCM signal input module comprises a single-ended receiver; one end of the single-ended receiver is connected to a single-ended PCM signal of the PCM encoder through a single-ended PCM connector on a device panel; and the other end is connected to the FPGA logic processing unit; The indicator light driving circuit comprises a level conversion circuit; one end of the level conversion circuit is connected to the FPGA logic processing unit, and the other end is connected to an indicator light; the indicator light comprises a power indicator light, a work state indicator light and a PCM input indicator light; The dog feeding signal reset module comprises an RS232 interface conversion circuit, one end of which is connected to an FPGA logic processing unit, and the other end is connected to a functional processing board docking connector.

4. A monitoring method for testing the working state of a system, characterized in that: The monitoring device for testing the working state of a system is used, and the method is as follows: Step 1: power on the monitoring device for testing the working state of a system, and configure an XML file for the working state of the monitoring device before formal work or call the XML file already configured in the monitoring device; Step 2: load the working configuration parameters of the monitored device according to the XML file, control the monitored device to restart and take effect, and start normal work according to the configuration parameters; Step 3: analyze the data stream of the monitored device; Step 4: monitor the H.264 decoding and display of the video data output by the monitored device, record the working state parameters, video decoding data, and display the abnormal data alarm.

5. The method for monitoring the working state of a test system according to claim 4, characterized in that: The data stream of the PCM encoder is a PCM data stream, and the analysis of the PCM data stream is realized by the FPGA logic processing unit, and the specific method is as follows: Power on the monitoring device, start the FPGA logic processing unit, and initialize; Determine whether there are configuration parameters in the read buffer of the USB controller: If not, wait until the configuration parameters are completed; If yes, read the data in the buffer of the USB controller; configure the working parameters of the PCM encoder according to the content of the data; According to the working parameters of the PCM encoder, find the main frame synchronization word and the first subframe; read the data of the PCM encoder and write it into the USB controller in 16 bits; when the data in a main frame is not written, repeatedly read the data of the PCM encoder and write it into the USB controller in 16 bits; when a main frame is written, find the next main frame.

6. The method for monitoring the working state of a test system according to claim 5, wherein: The working parameters configured by the PCM encoder include the device ID, PCM bit rate, PCM synchronization word, main frame length, subframe length, PCM channel number, and whether to send, multicast address, and port number of the PCM encoder; The working parameters monitored by the PCM encoder include the device ID, PCM bit rate, PCM synchronization word, main frame length, subframe length, PCM channel number, and whether to send, multicast address, and port number of the PCM encoder; and the sending state of each channel of the PCM encoder; Among them, the sending state of each channel of the PCM encoder is normally displayed in green and safe, and if the sending state is abnormal, it is displayed in red alarm; If the decoding data of the PCM encoder received is consistent with the requirement of the configuration file, it is determined that the sending state of each channel of the PCM encoder is normal, otherwise, the state is abnormal.

7. The method for testing system health monitoring of claim 6, wherein: When the monitored network interface device is a collector, the working parameters configured by the collector include the device ID, channel, collection resolution, frame rate, code rate, encoding mode, network output, file recording, file segmentation length, multicast address, and multicast port of each collector; The working parameters monitored by the collector include the device ID, channel, collection resolution, frame rate, code rate, encoding mode, network output, file recording, file length, multicast address, and multicast port of each collector; The working state monitored by the collector includes recording state, video network output state, time code state and disk remaining size state; the recording state, video network output state and time code state information are not received according to the configuration file, and red alarm is given; when the disk remaining size is less than 1GB, red alarm is given.

8. The method for testing system operational status monitoring of claim 7, wherein: When the monitored network interface device is the recorder, the working parameters configured by the recorder include the device ID of the recorder, the device ID of the collector recorded by the recorder, the channel, the file segment, the multicast address, the multicast port and the file record; The working parameters monitored by the recorder include the device ID of the recorder, the device ID of the collector recorded by the recorder, the channel, the file segment, the multicast address, the multicast port and the file record; The working state monitored by the recorder includes the recording state and the disk remaining size state; when the recording state is not received according to the configuration file, red alarm is given; when the disk remaining size is less than 1GB, red alarm is given.

9. The method for testing system health monitoring of claim 8, wherein: The H.264 decoding adopts FFMPEG; the video data output by the monitored device is compressed into H.264 format, and is converted into YUV420P after H.264 decoding; DirectDraw method is adopted during display.

10. The method for testing system operational status monitoring of claim 9, wherein: When the working state monitoring software sends the dog feeding instruction, under normal working condition, the working state monitoring software sends the dog feeding instruction to the FPGA logic processing unit through the RS232 interface conversion circuit at a time interval of 300ms, the FPGA logic processing unit controls the power conversion module to normally output, and the power conversion module and the secondary power conversion module are connected; when the monitoring device is dead or abnormally working, the FPGA logic processing unit does not receive the dog feeding instruction, the FPGA logic processing unit controls the power conversion module to cut off the output, and the monitoring device is restarted.

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