What is a car jumpstarter?

what is wireless monitoring transmission equipment?

    Wireless image transmission as a very important wireless monitoring transmission equipment, its performance and the correct using are related to the entire wireless monitoring system weather can run properly.

   It seems very easy, in fact not at all. It not only need to choose the suitable wireless image transmission but also need to operation correctly, in which situation will  really play its roles.

1.What is the effect of bad weather on wireless image transmission?

   Wireless image transmission is used in the outdoors, in bad weather, such as wind and rain will have a certain impact on the wireless transmission of the signal transmission. So the selected bridge equipment must have a good waterproof, dustproof, lightning protection, anti-ultraviolet and other functions in order to adapt to the complex outdoor environment. In addition, if used in the outdoors, be sure to fixing it to prevent fall down by wind.

2.How does the wireless image transmission to align the direction?

   The wireless image transmission need the signal alignment to achieve transmission, If the wireless  image transmission is not aligned, within a few hundred meters, which can see the distance by the naked eye, you can directly use the hands to align, as the same time reference to the device's own intensity indicator.But if the naked eye can not see the distance, you can using the positioning system to query the latitude and longitude of the equipment at the both ends, then to adjust through the angle between the two ends.This is the most common and practical method. According to the practical application, our principle is that the signal strength can only be high but not to low.

3.What are the differences between the directional antenna and the omnidirectional antenna?

The coverage of the directional antenna can only be active in front of the antenna,for example, a directional antenna with 60 degrees, then its coverage is 60 degrees front it , while the omnidirectional antenna coverage is the horizontal 360 degrees. Directional antenna has strong directional, so it is used for long-distance wireless transmission, and omnidirectional antenna direction is not strong, so more for close-range wireless coverage.

4、How many wireless transmission modes the wireless image transmission have? and what are them?

   

The common wireless transmission modes of the wireless image transmission:

Point to point transmission, that is, a receiver to a transmitter, the transmission distance can be very far, up to tens of kilometers to hundreds of kilometers.

Point to multipoint transmission, that is, a receiver to a number of transmitters, the transmission distance is generally closed in 10 km.

Relay transmission, that is, between the receiver and the transmitter add a relay device, commonly used in the situation which the receiver and the transmitter has a barrier, or the distance is so far.

5、Wireless transmission must be unobstructed?What about there have obstacles?

Wireless image transmission is using the microwave for wireless transmission, the microwave transmission path is along the straight line, so the middle can not have any obstacles, with a little obstacle will have some certain impacts but  the problem is not big. If  there is a large area of the obstacles, then you must use the following three methods:

• Avoid the obstacle, the common methods are standing up, or moving the transmitter / receiver of the wireless image transmission, until there is no obstacles between the two ends of the transmission.

• Adopt the transit device, set a transit point between the transmitter and receiver sides there is no obstacles, and then add two devices for receiving the signal from the transmitter, and transmit to the receiver.

• Remove the obstacles, if they are some trees, you can cut off the branches what block the signal transmission, if they are large buildings, or mountains can’t be removed, then only can implement the first or second method.

6. Do they have some effects on the wireless image transmission of the wind and rain, snow and other weathers?

   Rainy weather will cause the microwave signal attenuation, but generally does not affect the normal operation of the wireless image transmission.  If it is not under the Blizzard there have no problem, the little snow  wouldn’t have much impact on the wireless image transmission. After all, the wireless image transmission has a very good waterproof and dustproof, heat and cold resistance and other functions, as long as they are fixed and safe, do not let the blizzard blows the direction of the equipment will have no problem.