The core of the DETEXI network video management system — Network Video Recorder. The DETEXI NVR supplies the basis for video management, monitoring, analysis, and recording.
General Features Provided by the DETEXI NVR
The NVR video management enables multiple users to view several different cameras at the same time (DETEXI Client) and allows recording to take place simultaneously.
The NVR video motion detection defines activity by analyzing data and differences in a series of images (areas of interest can be defined) providing VMD functionality to network cameras or video encoders that do not originally embed this feature. This alleviates the workload for any recording devices in the system and makes event-driven surveillance possible.
The NVR provides several recording modes: manual, scheduled (with or without motion detection), on alarm, and on motion detection only.
The NVR video management allows users to administer and manage cameras from a single interface: managing IP addresses and setting resolution, compression, and security levels.
The NVR supports remote access to the system configuration information (users, cameras, schedules, motion settings, tasks) and recorded video (storing in the NVR Archive) via DETEXI Client software. Provides multiple search functions for recorded video.
The NVR allows control of PTZ and dome cameras via mouse that is controlled by an operator in the DETEXI Client, or it can be done automatically via guard tours and sequences controlled by the software.
The NVR supports configuration of I/Os: enables video to be sent and recorded, and alarms to be sent in response to external sensors. This allows remote monitoring stations (Remote DETEXI Clients) to become immediately aware of a change in a monitored environment.
The NVR provides alarm management: the software can sound an alarm, display pop up windows with alarm video stream, send e-mails, or call a phone and play alarm-specific WAV file or text-to-speech message.
The NVR also provides full duplex real-time audio support, for either live or recorded audio.
— DETEXI NVR Internal Structure —
DETEXI NVR Internal Structure
The DETEXI NVR installed on a standard Windows PC server comes with recording and viewing functionalities as well as functionalities for configuring network video devices. Includes event handling and security; video motion detection and other video intelligence as well as integration with other systems such as access control and building management.
Based on a Windows DETEXI Client provides for live video/audio viewing, cameras control and search/playback archived video functionality. All system settings are inherited and downloaded from the NVR.
A background service in Windows, DETEXI NVR will start automatically upon system start-up and continue running even after the user logs out. DETEXI is a self-contained package, so there are no plug-ins, downloads or players to install.
All dialogs that allow control and configuration of all aspects of the DETEXI NVR are found under the NVR Control Center — the NVR graphic user interface.
The DETEXI NVR can be considered as an intelligent storage and authentication server for the Remote DETEXI Clients with virtually unlimited number of IP video/audio suppliers (such as IP-cameras and video servers) logically attached to it.
Any attached device can be used by the NVR. Video/audio source or source of the remote event (motion events or remote I/O port events) are examples of attached devices.
NVR Underlying Structure
The underlying structure of the DETEXI NVR software consists of many individual services, which allow execute and organize all the tasks it is responsible for. The services are registered with Windows as Services; some are configured as automatic by default.
— DETEXI NVR Internal Structure — NVR Services —
DETEXI NVR Internal Structure
The DETEXI NVR software consists of different modules/services, which allow execute and organize all the tasks it is responsible for. The services are registered with Windows as Services; some are configured as automatic by default.
Knowing the responsibility of each service is important. This allows users to make sure the necessary services for the given application are running and controlled properly, while unnecessary services are turned off to preserve system resources.
All NVR services are visible and configurable in the NVR Control Center — Monitor.
NVR Services
Monitor service is an internal service to start/stop other DETEXI NVR services. It is also responsible for monitoring the health and status of all NVR Services.
Server service authenticates remote users connected to the NVR through the Remote DETEXI Clients. It is also responsible for tracking statistics about the remote user’s connections.
Recorder service records information and images from each video input into the NVR archive, according to the configured schedules, preferences, alarms and events.
FTP Server service receives images from cameras via FTP and writes them into the NVR archive. It also raises an alarm when such images are received from a camera, and can also be used for FTP notification of IP address changes from the camera to the NVR.
Check Drive service monitors the condition of the storage path and device to confirm existence and available space for new video being recorded to the archive.
Check Alive service monitors if camera is online and video inputs are active.
Check Alarm service monitors the hard inputs of connected video devices, and raises alarms when defined changes are seen on such inputs.
Tour service moves PTZ cameras through a predefined series of locations according to defined schedules or on alarms or events.
Get Shots service captures still shots related to alarms from streaming video, when configured, and stores them in a special location in the archive.
Port Mapper service, when configured, routes network requests between two network connections on different subnets or networks. This allows for separate security and corporate networks across which the DETEXI system can communicate.
Port Listener service has the ability to monitor alarms raised by local alarm devices connected to the NVR computer.
Alarm Server service is responsible for raising alarms via the Text-to-Speech engine, telephone, e-mail and other mediums. This is configured as an Automatic Windows Service and starts at Windows startup.
Remote Server service is an internal service for intercommunications between linked NVR Domain Controller and child NVRs. This is configured as an automatic Windows Service and will start with Windows.
Socket Server service is an internal service to support remote TCP/IP access to the NVR. This is configured as an automatic Windows service and starts at Windows startup.
— DETEXI NVR Internal Structure — Services Health Monitoring —
DETEXI NVR Internal Structure
Services Health Monitoring
In the default setup the DETEXI NVR is working in an unattended mode, this means it is up to the local administrator to check the status of the programs and related hardware manually. However, in most cases a PC Server accommodating the DETEXI software is in a remote location with no local human interaction, therefore a designated person or persons should be aware of the DETEXI NVR status at any given time. You may not need the recorded video for weeks or even months, but if something happened (camera failure, power failure, network failure etc.) during that time it is possible that the NVR does not have some or any recorded video at all and the required evidence may be lost.
There are several areas that should be checked to insure that you have a healthy and functioning system —
Is the NVR running at all (power is OFF or ON) Are all selected NVR services running Are all cameras with an active schedule functioning and being recorded Is there enough space to make a recording Are there enough system resources to make a recording Is the NVR Domain Controller network and all it’s child NVRs healthy and running
The NVR services could fail due to unforeseen events and therefore must be monitored and controlled. To monitor the health of the NVR services you need to assign a predefined task that will be executed in a case of failure to each service you wish to monitor.
Predefined tasks to be executed on check status/ health consist of one or more actions/notifications —
For more information, refer to the Administration and Management — Reliability System section.
Learning the NVR event management system should allow a better understanding of how to configure system settings including system health monitoring.
— DETEXI NVR Internal Structure — Service Health Status —
DETEXI NVR Internal Structure
Service Health Status
NVR Service Health Status — when any of the individual NVR Services encounter problems, this event is raised.
All NVR services are visible and configurable in the NVR Control Center — Monitor.
To setup NVR Services health monitoring you need to assign a predifined task that will be executed in a case of failure to each service you wish to monitor.
In the NVR Control Center — Monitor
Press Health monitor On/Off button in the bottom right corner — the No answer task panel appears.
To assign a task to a service select previously created task from the drop-down list next to the component.
Assign a task to each service.
If properly configured, service failure will be detected within 3 minutes and the assigned task will be executed.
To learn more refer to the Administration and Management — NVR Control Center — Service Status section.
Learning the NVR event management system should allow a better understanding of how to configure system settings including system health monitoring.
DETEXI® Network Video Management System
In the default setup the DETEXI NVR is working in an unattended mode, this means it is up to the local administrator to check the status of the programs and related hardware manually. However, in most cases a PC Server accommodating the DETEXI software is in a remote location with no local human interaction, therefore a designated person or persons should be aware of the DETEXI NVR status at any given time. You may not need the recorded video for weeks or even months, but if something happened (camera failure, power failure, network failure etc.) during that time it is possible that the NVR does not have some or any recorded video at all and the required evidence may be lost.
There are several areas that should be checked to insure that you have a healthy and functioning system —
Is the NVR running at all (power is OFF or ON)
