Horizontal resolution
In the television monitoring system, sharpness is the main parameter to measure the quality of the system image, and the definition is mainly reflected in the horizontal resolution. The World Expo dedicated DVR requires stricter and more stringent requirements than previous DVRs for the monitoring and playback of images. The horizontal resolution of the monitoring state and the horizontal resolution of the playback state, the technical requirements are: the monitoring state horizontal resolution ≥ 400 TV lines; the playback state horizontal resolution ≥ 350 TV lines.
Detection method: Input the line multi-group signal of the standard video signal generator into each channel and record it, visually monitor the horizontal resolution of the monitor image in the monitor state and playback state.
Frame/s)
The Expo-specific DVRs should record images at a frame rate of 2 frames per second at the same frame rate or higher image quality, while recording images at a frame rate of 25 frames per second. According to the requirements of the “Basic Requirements and Procedures for the Security Technology Precautionary Project for Temporary Exhibition Facilities and Surrounding Facilities of the Shanghai World Expo Park in China 2010â€, the system needs to set 24-hour real-time or motion detection video image recording and recording frames according to the venue operation time. The number is not less than 25 frames per second; at the same time, there should be 2 frames per second of continuous automatic image capture records at the temporary exhibition hall entrances and exits.
Detection method: Set two digital frequency/counters as: frequency generator (25 Hz) and counter (internal excitation timing milliseconds). The output of the frequency generator is input to the counter for counting, and an external synchronization signal is simultaneously input to the camera and the frequency generator. The camera simultaneously captures the display data on the frequency generator and the counter, and input to each channel through the video distributor. Record it. The machine playbacks frame by frame, counts and records the number of recorded frames within 3 seconds, and repeats 3 times to calculate the average value per second. The function of recording images at a frame rate of 25 frames per second and at a frame rate of 2 frames per second has to be tested separately.
Image save time
The World Expo dedicated DVR hard disk capacity should be greater than the image recording settings save time, until the hard disk full cycle automatically, covering the earliest video recording. According to the requirements of the "Basic Requirements and Procedures for the Security Technology Precautionary Project for Temporary Exhibition Venues and Surrounding Facilities of the Shanghai World Expo Park in China 2010", the image preservation time of real-time or motion detection video images shall be no less than 30 days, and the time for capturing image records shall be kept. Not less than 190 days.
Detection method: the standard video and audio dynamic test signal is input to each channel of Expo-specific DVR through the distributor, and set real-time recording (25 frames/second frame rate) and capture image recording (2 frames/second frame rate) Hours, statistics and record the hourly occupied hard disk capacity, repeated three times to calculate the hourly average of the hard disk capacity of both real-time recordings and captured image recordings. Combined with the World Expo dedicated DVR itself allows the total capacity of the hard disk and drive letter allocation, to determine whether to meet the specific technical requirements of the Expo.
Should install, start and run third-party management software (WINXP)
The industrial control type DVR is based on the PC platform and the Microsoft operating system, so the industrial control type DVR itself has the conditions to run third-party management software; and the embedded DVR is generally based on the Linux system, so it must be composed of the same PC to meet the Expo requirements.
Detection method: Check whether the industrial control type DVR system has its own Windows XP operating system. Otherwise, check whether its hardware configuration meets the requirements for installing the Windows XP operating system and try the test; the embedded DVR needs to be delivered by the inspection factory. The WINXP operating system PC and the DVR constitute a system, and the two do not have hardware and software conflicts.
remote control
The Expo Coordination Office will set up a unified remote management platform for the security system in the park to facilitate real-time monitoring and post-processing of information. Therefore, the World Expo dedicated DVR shall provide network control software so that the remote management platform can use the network to record hard disk recorders no less than Class A requirements for image surveillance, playback and manual recording; view all logs of the DVR; within the scope of authorization, take over, set up and control the DVR (except network communication).
Detection method: Using the simulated Expo remote management platform, the DVR connected to the system is monitored, played back, and recorded manually through a remote network. All logs generated by the DVR are viewed; parameters of the DVR are set through a remote network, and Check the validity and reliability of the settings.
In addition to the above points, there are still some points that must be observed during testing. The Expo-specific DVR's 25 frames per second frame rate image record and 2 frames per second frame rate image record can be saved separately or separately in the same place. The record keeping time and the coverage period can be set arbitrarily, and the time, channel, position character, and other information related to the image information are superimposed and displayed. The inspection and inspection factory shall also provide the format of the log file, and provide a third-party interface to read the local and network interfaces.
In the television monitoring system, sharpness is the main parameter to measure the quality of the system image, and the definition is mainly reflected in the horizontal resolution. The World Expo dedicated DVR requires stricter and more stringent requirements than previous DVRs for the monitoring and playback of images. The horizontal resolution of the monitoring state and the horizontal resolution of the playback state, the technical requirements are: the monitoring state horizontal resolution ≥ 400 TV lines; the playback state horizontal resolution ≥ 350 TV lines.
Detection method: Input the line multi-group signal of the standard video signal generator into each channel and record it, visually monitor the horizontal resolution of the monitor image in the monitor state and playback state.
Frame/s)
The Expo-specific DVRs should record images at a frame rate of 2 frames per second at the same frame rate or higher image quality, while recording images at a frame rate of 25 frames per second. According to the requirements of the “Basic Requirements and Procedures for the Security Technology Precautionary Project for Temporary Exhibition Facilities and Surrounding Facilities of the Shanghai World Expo Park in China 2010â€, the system needs to set 24-hour real-time or motion detection video image recording and recording frames according to the venue operation time. The number is not less than 25 frames per second; at the same time, there should be 2 frames per second of continuous automatic image capture records at the temporary exhibition hall entrances and exits.
Detection method: Set two digital frequency/counters as: frequency generator (25 Hz) and counter (internal excitation timing milliseconds). The output of the frequency generator is input to the counter for counting, and an external synchronization signal is simultaneously input to the camera and the frequency generator. The camera simultaneously captures the display data on the frequency generator and the counter, and input to each channel through the video distributor. Record it. The machine playbacks frame by frame, counts and records the number of recorded frames within 3 seconds, and repeats 3 times to calculate the average value per second. The function of recording images at a frame rate of 25 frames per second and at a frame rate of 2 frames per second has to be tested separately.
Image save time
The World Expo dedicated DVR hard disk capacity should be greater than the image recording settings save time, until the hard disk full cycle automatically, covering the earliest video recording. According to the requirements of the "Basic Requirements and Procedures for the Security Technology Precautionary Project for Temporary Exhibition Venues and Surrounding Facilities of the Shanghai World Expo Park in China 2010", the image preservation time of real-time or motion detection video images shall be no less than 30 days, and the time for capturing image records shall be kept. Not less than 190 days.
Detection method: the standard video and audio dynamic test signal is input to each channel of Expo-specific DVR through the distributor, and set real-time recording (25 frames/second frame rate) and capture image recording (2 frames/second frame rate) Hours, statistics and record the hourly occupied hard disk capacity, repeated three times to calculate the hourly average of the hard disk capacity of both real-time recordings and captured image recordings. Combined with the World Expo dedicated DVR itself allows the total capacity of the hard disk and drive letter allocation, to determine whether to meet the specific technical requirements of the Expo.
Should install, start and run third-party management software (WINXP)
The industrial control type DVR is based on the PC platform and the Microsoft operating system, so the industrial control type DVR itself has the conditions to run third-party management software; and the embedded DVR is generally based on the Linux system, so it must be composed of the same PC to meet the Expo requirements.
Detection method: Check whether the industrial control type DVR system has its own Windows XP operating system. Otherwise, check whether its hardware configuration meets the requirements for installing the Windows XP operating system and try the test; the embedded DVR needs to be delivered by the inspection factory. The WINXP operating system PC and the DVR constitute a system, and the two do not have hardware and software conflicts.
remote control
The Expo Coordination Office will set up a unified remote management platform for the security system in the park to facilitate real-time monitoring and post-processing of information. Therefore, the World Expo dedicated DVR shall provide network control software so that the remote management platform can use the network to record hard disk recorders no less than Class A requirements for image surveillance, playback and manual recording; view all logs of the DVR; within the scope of authorization, take over, set up and control the DVR (except network communication).
Detection method: Using the simulated Expo remote management platform, the DVR connected to the system is monitored, played back, and recorded manually through a remote network. All logs generated by the DVR are viewed; parameters of the DVR are set through a remote network, and Check the validity and reliability of the settings.
In addition to the above points, there are still some points that must be observed during testing. The Expo-specific DVR's 25 frames per second frame rate image record and 2 frames per second frame rate image record can be saved separately or separately in the same place. The record keeping time and the coverage period can be set arbitrarily, and the time, channel, position character, and other information related to the image information are superimposed and displayed. The inspection and inspection factory shall also provide the format of the log file, and provide a third-party interface to read the local and network interfaces.
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