CN2672985Y - One master multiple slave telephone set - Google Patents

Abstract

The utility model relates to a telephonic communication device, in particular to a one master multiple slave telephone set, comprising a master telephone set and a plurality of slave telephone sets. The master telephone set is provided with a telephone signal wire interface. The master telephone set and each slave telephone set are respectively provided with a power and signal interface. The master telephone set and the slave telephone sets are connected with the electric power line via the power and signal interfaces. The utility model solves the technical matter that between the master telephone set and the slave telephone sets of the available one master multiple slave telephone set, the signals are exposed to the interfering of extraneous electronic signals owing to the wireless signal transmission form. The utility model provides a one master multiple slave telephone set which can prevent external interference from interfering the intercommunication signals.

Description

A kind of one female how sub-telephone set

Technical field:

The utility model relates to telephone communication equipment, particularly a kind of one female how sub-telephone set.

Background technology:

Existing primary and secondary telephone set majority is the form that adopts a female son, and female many subtypes telephone set of minority is also arranged, and they all are based on the working method of transmission of wireless signals, and its structure sees also Fig. 1.As shown in the figure: these transmit by the signal that wireless transmission reception antenna C carries out between base telephone machine A and the sub-telephone set B, the signal that its signal of communication often is subjected to other electronic equipment easily disturbs, cause signal transmission quality not good, and also higher relatively based on the equipment cost of wireless communication technology.

In addition, the spread spectrum technic in the power carrier communication technology be a kind of reliability than higher information transmission mode, the frequency band that its signal occupied is much larger than the essential minimum bandwidth of transmitted breath.The broadening of frequency band be by the coding and the modulation method realize, and with transmitted breath data independence; At receiving terminal, then utilize identical spreading code to carry out correlation demodulation, separate to extend to and recover institute's information transmitted data.

The utility model content

The utility model will solve between the mother of existing female many subtypes telephone set, the sub-telephone set, owing to adopt wireless signal transmission form, its signal is subjected to the technical problem of extraneous disturbance of electronic signal easily, and a kind of female how sub-telephone set that can make internal communication signal not be subjected to external interference is provided.

For solving the problems of the technologies described above, the utility model is achieved in that

A kind of one female how sub-telephone set, comprise base telephone machine and plurality of sub telephone set, this base telephone machine is provided with a telephone signal line interface, it is characterized in that: this base telephone machine and sub-telephone set are respectively equipped with a power supply and signaling interface, by these power supplys and signaling interface base telephone machine and sub-telephone set are connected into power line.

Be provided for the modulator-demodulator of spread spectrum communication in this mother, the sub-telephone set respectively.

This power line access place is provided with a signal trap circuit, comprises switch, inductance coil and capacitor in this circuit.

Do not connecting a capacitor between the isopen.

Learn that by above stated specification essence effect of the present utility model is described as follows:

At first, this base telephone machine of the present utility model and sub-telephone set are respectively equipped with a power supply and signaling interface, by these power supplys and signaling interface base telephone machine and sub-telephone set are connected into power line.Therefore, when realizing intercommunication between mother, sub-telephone set, its signal is not easy to be subjected to the signal interference of extraneous electronic equipment, helps improving signal quality, and cost is also than adopting communication to realize that the equipment of INCOM intercom is low.

Secondly, of the present utility model one female how sub-telephone set can be realized:

1. when the external call signal call, conversation can simultaneously or be replied in son, the ring simultaneously of base telephone machine separately;

2. sub-telephone set and base telephone machine be call conversation mutually;

3. sub-telephone set and sub-telephone set be call conversation mutually.

Description of drawings:

Fig. 1 is the structural representation of existing primary and secondary telephone network machine.

Among the figure: A-base telephone machine; B-telephone set; C-wireless transmission reception antenna;

D-telephone signal line.

Fig. 2 is the structural representation of the utility model primary and secondary telephone set.

Among the figure: 1-base telephone machine; 2-telephone set; 4-telephone signal line;

The 5-220V power line; 6-power supply and signal connecting line.

Fig. 3 is the structural representation of base telephone machine in the utility model.

Among the figure: 10-power supply and signaling interface; 11-general function keypad;

12-mothers and sons call function key 17-receiver;

18-receiver and main frame connecting line; 19-telephone signal line interface.

Fig. 4 is the structural representation of the utility model neutron telephone set.

Among the figure: 21-general function keypad; 22-mothers and sons call function key;

The sub-call function key of 23-; The 27-receiver;

28-receiver and main frame connecting line; 29-telephone signal line interface.

Fig. 5 is the fundamental diagram of the utility model primary and secondary telephone set.

Among the figure: 1-base telephone machine; 2-telephone set; 4-telephone signal line;

The 5-220V power line.

Fig. 6 is signal trap circuit theory diagrams in the utility model.

Among the figure: the 51-AC220V live wire; The 52-AC220V zero line; The 53-mains switch;

54-low pass inductance coil; 55-high pass capacitor.

Fig. 7 is the circuit theory diagrams that signal does not transmit between isopen.

Among the figure: 54-low pass inductance coil; 55-high pass capacitor; 56-phase line A;

57-phase line B; The 58-master switch.

Embodiment:

An a kind of novel female how sub-telephone set based on PLC technology, it comprises base telephone machine 1, one or more sub-telephone set 2, communication modes between them adopts the PLC technology mode, they connect by average family or office powerline (net) 5, obtain working power by supply socket, be again signal transmission passage simultaneously, referring to Fig. 2.Each sub-telephone set is provided with a geocoding, can conveniently realize conversation between an independent conversation of a female son or different two the sub-telephone sets by addressing technique.Sub-telephone set 2 and base telephone machine 1 also have its special function keys except design has ordinary telephone set function key 11,21.1 design of base telephone machine has primary and secondary call function key 12, and convenient base telephone machine 1 and the sub-telephone set 2 realized conversed; Sub-telephone set 2 designs have primary and secondary call function key 22 and sub-call function key 23, and convenient the realization conversed between sub-telephone set and base telephone machine or the sub-telephone set, and its structure is consulted Fig. 3,4.

Its operation principle as shown in Figure 5, sub-telephone set 2 and base telephone machine 1 both sides have designed modulator-demodulator, they carry out signal transmission by modulator-demodulator, power line 5, its ZAP can adopt spread spectrum technic.When normal extraneous call signal, not only ring of base telephone machine 1 is also sent bell signal by modulator-demodulator to all sub-telephone sets 2, and either party can reply, also a plurality of replying simultaneously;

When group telephone set 2 or base telephone machine 1 need be dialed extraneous phone, identical with the plain old telephone operation, hear that dialing respective number behind the regular prompt sound gets final product;

When a certain sub-telephone set 2 need be conversed with base telephone machine 1, can directly press primary and secondary talk key 22, its signal can not received by other sub-telephone set, treat can realize after the other side replys conversation;

When base telephone machine 1 need be conversed with a certain sub-telephone set 2, can directly press primary and secondary talk key 12, and get final product by corresponding sub-telephone set geocoding, its signal can not received by other sub-telephone set, treat can realize after the other side replys conversation;

When a certain sub-telephone set need be conversed with another sub-telephone set, can directly press sub-talk key 22, and get final product by corresponding sub-telephone set address number, its signal can not received by other sub-telephone set, treat can realize after the other side replys conversation.

During use,, power-line plug (also being primary and secondary communication signal plug simultaneously) is inserted power supply and signaling interface 10 the telephone signal line interface 19 of ordinary telephone line plug insertion base telephone machine 1; Again the power-line plug of all sub-telephone sets 2 (also being primary and secondary communication signal plug simultaneously) is inserted power supply and signaling interface 20.

Referring to Fig. 6, in order to prevent that communication signal from passing through power line (net) 5 and passing to the external world, need be at power line 5 (net) the master switch place of family or office modelled signal trap circuit, because this circuit inductance coil 54 has the characteristic of " low pass high resistant ", and capacitor 55 has the characteristic of " high pass low-resistance ", make signal can not be transferred to the external world, do not influence the normal electricity transmission simultaneously.Referring to Fig. 7, if power network not in same phase line, then need design a capacitor between the phase line of master switch, and upward in like manner can realize the transmission of the signal between the isopen, synchronous signal can not pass to the external world yet.

Claims (4)

1, a kind of one female how sub-telephone set, comprise base telephone machine and plurality of sub telephone set, this base telephone machine is provided with a telephone signal line interface, it is characterized in that: this base telephone machine and sub-telephone set are respectively equipped with a power supply and signaling interface, by these power supplys and signaling interface base telephone machine and sub-telephone set are connected into power line.

2, according to claim 1 one female how sub-telephone set is characterized in that: the modulator-demodulator that is provided for spread spectrum communication in this mother, the sub-telephone set respectively.

3, according to claim 1 and 2 one female how sub-telephone set, it is characterized in that: this power line access place is provided with a signal trap circuit, comprises switch, inductance coil and capacitor in this circuit.

4, according to claim 3 one female how sub-telephone set is characterized in that: do not connecting a capacitor between the isopen.

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