CN201163805Y - Santong wireless intercom communication device for high voltage cables and cable tunnels - Google Patents

Abstract

The utility model discloses a three-sameness wireless talkback communication device for high-voltage cables and cable tunnels. The communication device mainly comprises a relay station; two pairs of wireless frequency points are provided corresponding to the relay station; every wireless frequency point of the three-sameness wireless talkback communication device for high-voltage cables and cable tunnels is set as a bidirectional relay platform; and one relay in every pair of wireless frequency points of the three-sameness wireless talkback communication device for high-voltage cables and cable tunnels has the same frequency with a relay of the other frequency point. When the communication device is in use, after any user in a network initiates a call, a system can choose one relay platform which is stronger in received signals as an anchor, and the other relay platforms simultaneously rebroadcast audio signals of the anchor relay platform, so as to achieve the aim of effectively avoiding multipath interference; in addition, the communication device also has the following advantages of: the same frequency, i.e. a plurality of relay platforms use the same frequency point for emission without affecting normal conversation; and synchronization, i.e. the relay platforms are automatically in clock synchronization with the anchor relay platform during rebroadcast.

Description

Santong wireless intercom communication device for high voltage cables and cable tunnels

technical field

The utility model relates to the technical field of mobile communication, in particular to a three-way wireless intercom communication device for high-voltage cables and cable tunnels.

Background technique

All kinds of wireless communication devices require a large number of repeater stations for signal transfer to ensure communication quality.

The so-called repeater station is a public device used to directly communicate with amateur radio stations in difficulty and transmit necessary information, especially to ensure emergency communication in the event of a disaster.

Due to the occlusion of buildings/terrain, the signals between the 2 stations on the ground may not be able to transmit to each other, but the 2 people and this very high and well-located repeater can communicate well, so We use relay stations to achieve wider coverage and help low-power devices expand their signals.

The usual repeater station needs to use a pair of frequency points, one receives the signal from the user's mobile station or vehicle station (uplink signal, such as 434.750), and when received, transmits it on the other frequency point (downlink signal, 439.750 ). Since the relay station must occupy a relatively good geographical location and may have a relatively large transmission power, more people can be contacted through the relay station.

However, if there are many repeaters, they will interfere with each other and affect normal calls.

Utility model content

The purpose of the utility model is to provide a three-way wireless intercom communication device for high-voltage cables and cable tunnels, which can overcome the existing defects, and any user in the network can initiate a call and avoid multi-path interference.

In order to achieve the above object, the technical solution adopted in the utility model is:

A three-way wireless intercom communication device for high-voltage cables and cable tunnels, which mainly includes a relay station, and two pairs of wireless frequency points are arranged corresponding to the relay station.

The high-voltage cables and cable tunnels use three wireless intercom communication devices, and each wireless frequency point is set as a two-way repeater.

In the three-way wireless intercom communication device for high-voltage cables and cable tunnels, each pair of wireless frequency points has a relay with the same frequency as a relay of other frequency points.

After the above structure is adopted, when any user in the network initiates a call, the system will select the relay station with a strong received signal as the anchor, and other relay stations will broadcast the audio signal of the anchor relay station at the same time, so as to effectively avoid The purpose of multipath interference, in addition, it also has the following advantages: same frequency: multiple repeaters use the same frequency to transmit without affecting normal calls; synchronization: automatically synchronize with the host repeater clock during rebroadcasting.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

The utility model discloses a three-way wireless intercom communication device for high-voltage cables and cable tunnels, which mainly includes a relay station, and two pairs of wireless frequency points are arranged corresponding to the relay station.

Each wireless frequency point is set as a two-way relay station.

Each pair of wireless frequency points has a repeater with the same frequency as a repeater of other frequency points.

In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, it discloses a three-way wireless intercom communication device for high-voltage cables and cable tunnels, which mainly includes a relay station 5, and two pairs of wireless frequency points 1, 2, 3, 4;

Wireless frequency point 1 is set as two-way relay stations 11 and 12;

Wireless frequency point 2 is set as two-way relay station 21, 22;

Wireless frequency point 3 is set as two-way relay station 31, 32;

Wireless frequency point 4 is set as two-way relay station 41, 42;

Among them, 11, 21, 31, and 41 have the same frequency, and 12, 22, 32, and 42 have the same frequency.

The relay station 5 covers four relay stations 1, 2, 3, and 4, and is mainly used for co-frequency and simulcast in a wide range, and responds to all calls.

When in use, the repeater stations 11, 21, 31, and 41 belong to the local repeater station. If it is only for short-distance communication, use the local repeater station to communicate with the walkie-talkie. If you want long-distance communication, use the repeater station 11, 21, 31, 41 and relay stations 12, 22, 32, 42 pass through relay station 5 to realize long-distance transmission.

When any user mobile phone 6 in the network initiates a call, the system will select the relay station with a stronger signal as the anchor, and other relay stations will rebroadcast the audio signal of the anchor relay station at the same time, so as to effectively avoid multipath interference. In addition, it also has the following advantages: Same frequency: Multiple repeaters use the same frequency to transmit without affecting normal calls; Synchronization: Automatically synchronize with the host repeater clock during rebroadcasting.

While the invention has been described by way of example, those skilled in the art will appreciate that there are many variations and changes to the invention without departing from the spirit of the invention, and it is intended that the appended claims cover such variations and changes without departing from the spirit of the invention.

Claims (3)

1. A three-way wireless intercom communication device for high-voltage cables and cable tunnels, characterized in that: it mainly includes a relay station, and two pairs of wireless frequency points are arranged corresponding to the relay station. 2. The three-way wireless intercom communication device for high-voltage cables and cable tunnels as claimed in claim 1, wherein each wireless frequency point is set as a two-way repeater. 3. The three-way wireless intercom communication device for high-voltage cables and cable tunnels as claimed in claim 2, wherein each pair of wireless frequency points has a relay with the same frequency as a relay of other frequency points.

Images