A plug access ringtone detection device

Abstract

Plug in and pull out type connection ringing detection device includes the input end and output end, and a plug-in board. The input end, output end, and detection circuit are fixed on the plug-in board. The plug-in board possesses input and output jacks in use for plugging in user circuit of switchboard magnet or circuit in telephone set. First input end, second input end, digital input end in high level, input end of ground wire, and output end of signal are installed on the jacks. Features are: good filtering effect, high sensitivity, convenient to maintain and replace, simple operation, and shortcut.

Description

technical field [0001] The invention relates to switch or telephone technology, in particular to a ring detection device for switch or telephone. Background technique [0002] In the existing technology, the switches with magnet user interfaces are mainly magnet switches and a small number of common electric switches with multiple user interfaces and relay interfaces. The ringing detection circuit of the magnet user interface is mainly composed of rectification, voltage stabilization, limiting Flow, isolation control, and filter circuit are composed of several parts, but there are the following deficiencies: [0003] 1. The design of the filter circuit is cumbersome, the filter effect is not ideal, and sometimes it will cause ringing misjudgment, and this part of the circuit adopts the form of two-stage drive and two-stage low-pass filter, resulting in large power consumption, especially not conducive to the portable magnet switch. Low power consumption design. [0004] 2....

AI Technical Summary

Problems solved by technology

[0003] 1. The design of the filter circuit is cumbersome, the filter effect is not ideal, sometimes it will cause ringing misjudgment, and this part of the circuit adopts the form of two-stage drive and two-stage low-pass filter, resulting in large power consumption, especially not conducive to the portable magnet switch. low power design

[0004] 2. The components of the ringing detection circuit and the user call circuit are uniformly laid out and wired with other control units in the user circuit board, which leads to the problem of occupying a large area of ​​the PCB board and making it difficult to replace. , Changing the user capacity requires changes to the layout and wiring, which is very difficult to implement

[0005] In addition, the ringer used in current electronic telephones is usually an electronic bell, which is generally composed of a ringing ASIC, an oscillating element, and an output transducer. It directly uses the energy of the AC ringing signal sent by the switchboard. After being processed by an integrated circuit, it outputs high and low composite audio alternately according to the switching frequency, and pushes the speaker to ring. There is no signal level indicating the ringing detection result, and its disadvantage is that it cannot adapt to the function of a telephone with a microprocessor. Expansion; and the current telephone with ring detection usually uses an integrated circuit to complete the ring detection function, which is not conducive to the circuit debugging in the development stage and the secondary development of the telephone function

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