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Ex camera & CCTV Detection & Control
A wide range of zoom, thermal and surveillance cameras of all kinds, as well as hardware and software to provide you with optimal CCTV solutions that meet your specific needs – high-end, durable and also suitable for extreme temperatures.
Analog camera
What are analog systems?
Analog camera systems refer to systems in which the image signal is transmitted as analog. This image signal has several names: FBAS, CVBS, TV signal, composite, etc.
The main formats are PAL and NTSC.
How are analog systems controlled?
High-performance cameras, such as our ExCam miniZoom, can be controlled. In this case we use not analog but rather digital interfaces bit-series (RS-232, RS485, RS-422) in a protocol language (VISCA®, PELCO®, Panasonic®).
What are the advantages of analog camera systems?
Unlike IP camera systems, analog camera systems are real-time. This means that the images appear on the monitor at the same time as they occur.
What are the drawbacks of analog systems?
- Control interfaces are not standardized, making it very difficult to integrate the system.
- Additional features, such as recording or switching images and with additional hardware, are difficult to implement.
- Integration into process control systems is not possible.
Digitalisation
Video servers are used to convert analog image signals into digital network video streams. These are available in a wide range of sizes from various manufacturers. They are also available as small circuit boards installed directly into the camera or as flexible 19-inch expandable solutions.
The video server solution that works best for you depends on many planning factors:
Are analog cameras already in use and, if so, where?
What is the installation distance in the Hazardous Area?
Is Ethernet already available in the factory?
Will the plant be expanded later?
IP camera network
IP camera systems or CCTV systems are used when image data or other voice information is transmitted using the TCP/IP protocol (IP Video, Voice over IP). In the long run, IP camera networks will replace analogue camera networks with the exception of a few
specific applications. The main reasons are:
- Standard network components (cables, switches, media converters, etc.) from various manufacturers can be used during installation.
- All Ethernet supports (copper, fiber optic cable, WLAN) can be used. The information is transmitted in the form of TCP/IP packages.
- Typical PCs, notebooks or PDAs can be used to view camera images. These are already present on factory sites or can be purchased cheaply. Expensive special equipment such as control panels or analog monitors is not required.
- Software solutions become important tools and replace expensive additional hardware. For example, video recorders are no longer required to record camera images and switching between images is only a program function.
- Software solutions allow for a very high level of individualization. Overview images can be individually adapted and integrated into site plans, for example.
- Real integration into process control systems can be achieved.
- The intelligence of the camera network is decentralized in digital camera systems. This further increases the performance of the camera network. For example, a digital camera can decide for itself whether a recording is important or not. As a result, only the actual data is stored.
- IP camera systems offer global access (for example via secure VPN tunnels). This means that cameras can be viewed and controlled from anywhere in the world. In addition, the camera can send its information directly to your workstation, for example from a remote biogas facility.
Complex camera networks need to be planned in detail. Settings such as network capacity utilization, WLAN bridges, media converters, processor load, etc. play an important role. Our expertise lies in the planning of complex camera networks.