What are the reasons for the unclear picture of the wireless monitoring system?

Wireless monitoring systems occupy a pivotal position in the field of security. Application is more and more extensive. Not all wireless monitoring systems are smooth, there are many problems in the overall operation, the picture is not clear. Then, what are the causes of the unclear monitoring picture?

First, the most critical thing is the reason for the camera itself.

1, the camera pixel level difference

Camera pixels have high or low, low pixel natural resolution is low, high pixel resolution is high, this is relatively easy to understand. The sharpness of the image of a camera with a higher definition is definitely much better, but the higher the resolution, the higher the bandwidth requirement for a wireless monitoring device.

2, the quality of the camera itself

The difference between digital network cameras and traditional analog cameras is that digital network cameras must not only capture images, but also compress these digital images before transmitting them over the network. Image quality is related to the choice of front-end lens, image sensor, and compression chip. The resolution of the digital network camera, the quality of the lens, and the adaptability of the system to low ambient illumination all affect the system image quality.

Second, the quality of the connection cable

In all respects, wireless monitoring systems are not completely wireless. Cameras to wireless transmission equipment, wireless transmission equipment to switches, video recorders, etc. still need to be connected through a network cable. The wire diameter selected for the transmission line is too small, the cable quality is not good, the transmission cable has a connector, or the transmission distance exceeds the maximum transmission distance of such a cable. This can also cause the image signal to be attenuated and affect the sharpness of the image. At present, most cameras use high-definition network cameras. Therefore, the use of ordinary network cable to build video surveillance systems, then the signal attenuation will be very large, we must use more than five types of network cable to transmit, so as to ensure that the front-end image quality is not attenuated The transmission to the monitoring center ensures the stability of the video signal.

Third, the impact of the switch

The switch is easily overlooked. Many people think that the switch is only a data exchange function and does not require any signal processing. It is easy to configure the switch without considering the configuration of the switch itself. This is an incorrect statement. If the data at the front end is relatively large, we must consider the backplane bandwidth of the switch and the packet forwarding rate. If the switch purchased by the user fails to meet the transmission requirements, it will run for a while. Data jams occur, resulting in no front-end signal being received. It is also a problem that is easily overlooked by users.

So this is also our emphasis on the customer repeatedly, the switch must be chosen well, do not deal with it.

Fourth, wireless transmission equipment that is the quality of wireless bridge

This is a crucial part of the entire wireless monitoring system. With a good wireless transmission device, the camera can achieve clear images. After transmission, it still maintains the original image clarity without any reduction. In some markets, the price is cheap and the parameters are marked like a model, which cannot be brought up in the transmission process, so the image is also greatly reduced.

So there are always a lot of customers who ask why Lean’s products are expensive and why are they more expensive than others... Here, I just want to say that the penny, the cost will be there, and the cost will be reduced, then it will be compressed. The quality of the equipment.

Fifth, the voltage problem

When the wireless monitoring system is set up, we must ensure that the voltage of all the power supply equipment is stable. If the camera voltage is not stable, the image will appear water ripple. The unstable voltage of the wireless monitoring equipment will cause the signal strength to weaken at certain times, and the images will be unstable. The long time will affect the service life of the wireless monitoring equipment.