Emergency communication host with internal and external communication functions

A technology of emergency communication and call function, applied to the structure of telephones, etc., can solve problems such as poor anti-interference ability, inability to satisfy users, and need to exchange equipment

CN104660752AInactive Publication Date: 2015-05-27XIAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-05-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an emergency communication host with internal and external communication functions. The emergency communication host comprises a host case, a talkback button, a talkback handle, a power circuit, a host internal and external communication circuit and a talkback handle communication circuit, wherein the power circuit comprises a rechargeable battery, an isolated single-end flyback switching power buck circuit, a power switching circuit, a battery charging circuit, a battery protection circuit, a battery voltage detection circuit, a non-isolated Boost circuit, a linear voltage stabilizing circuit and an extension voltage supply control circuit; the host internal and external communication circuit comprises a GSM module, an SIM card seat, a GSM antenna, a watchdog circuit, a reset circuit, a voice signal processing circuit, a distress signal detection circuit, a handle on-hook detection button circuit, a buzzer circuit, a low battery capacity indication circuit and a GSM network signal indication circuit. The host is convenient to install and use, high in voice response speed, high in communication quality, high in working reliability and capable of realizing 24-hour emergency calls.
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Description

technical field

[0001] The invention belongs to the technical field of emergency communication equipment, and in particular relates to an emergency communication host with both internal and external communication functions. Background technique

[0002] With the rapid development of the national economy, the construction of labor-intensive industrial and mining enterprises and industrial plants has increased, the urban population density has risen sharply, and high-rise residential buildings have continued to increase. Emergency communication equipment in mines, tunnels, factories, high-rise buildings, shafts, and confined spaces Become the last line of defense for the lives of trapped people, so the performance and use of emergency communication equipment is particularly important to save lives.

[0003] The emergency communication equipment maturely used in the existing market is usually a direct-press intercom system, which uses wires or optical cables as communication tr...

Examples

Embodiment Construction

[0096] Such as figure 1 As shown, the present invention includes a host housing 1 and a handle groove 2 and an intercom button 38 arranged on the top of the host housing 1, an intercom handle 3 is suspended on the handle groove 2, and an intercom handle 3 is arranged inside the host housing 1 Power circuit, host internal and external communication circuit and intercom handle communication circuit 4, the intercom handle communication circuit 4 is provided with an intercom handle interface terminal 5 for connecting the intercom handle 3, and the intercom handle interface terminal 5 is exposed on the side of the host housing 1;

[0097] Such as image 3 As shown, the power supply circuit includes a rechargeable battery 6 and an isolated single-ended flyback switching power supply step-down circuit 7 for converting 220V AC power to +4.9V voltage, and is used for selecting 220V AC power supply or rechargeable battery 6 for power supply and A power switching circuit 8 outputting a...