CN2254217Y - Fire alarm networking automatic alarm device - Google Patents

Abstract

The utility model provides a fire alarm networking automatic alarm device using a city telephone network to automatically switch on a fire alarm telephone and automatically alarm. The utility model is composed of a plurality of fire condition sensors arranged on the monitoring points. The utility model is characterized in that the utility model is additionally provided with a transmitter composed of a microprocessor and a telephone interface. The output end of the fire condition sensors is connected with the microprocessor, and the microprocessor is connected with the telephone interface and then is connected with a telephone circuit. The technique overcomes the defect that the prior art can not automatically alarm towards fire departments, and under the condition that no people is on duty, the utility model can automatically and accurately report the fire alarm information to the fire department through the telephone in time, and the safety factor of the fire alarm monitoring is greatly enhanced.

Description

Fire alarm networking autoalarm

The utility model belongs to the cable communicating technology field, relates to a kind of " fire alarm networking autoalarm " that utilizes city telephone network to connect Fire telephone automatically and report to the police automatically.

In the modern city building a lot of fireproofing installations are arranged, wherein autoalarm occupies critical positions.Existing fire alarm autoalarm generally is in the places such as room of needs monitoring condition of a fire sensor to be installed respectively, comprise temperature sensor, infrared sensor, carbon monoxide transducer or smoke transducer etc., the output of each sensor connects Centralized Controller, and Centralized Controller is connected alarm or automatic fire extinguisher (as perforated water spray).Here said alarm is meant warnings such as light, alarm bell, calls staff's fire extinguishing by reporting to the police, or is reported to the police to fire department with phone by the staff again.This warning device is difficult to play the warning effect in unattended buildings; In Attended mode, be difficult to also to avoid that human factor causes does not report to the police, reports to the police late and cause fire damage.The extinguishing ability of automatic fire extinguisher is limited, generally just plays auxiliary fire extinguishing effect, for playing the fire alarm that gesture is violent, firepower is big, must in time report to the police to fire brigade, and present autoalarm does not all have this function.

In order to overcome these deficiencies of prior art, the purpose of this utility model provides a kind of autoalarm, it should be able in time find fire alarm under unattended situation, and can be in time, exactly fire alarm information is automatically offered fire department by phone.

The scheme that realizes the foregoing invention task is as follows: same as the prior art, constitute by the some condition of a fire sensors that are arranged on the monitoring place, unlike the prior art be: be provided with in addition and form transmitter by microprocessor and telephony interface.The output of condition of a fire sensor connects microprocessor, the microprocessor interface of answering the call, the circuit of answering the call again.When being provided with special telephone line between monitoring place and the fire brigade, said telephony interface can be to be connected with phone off-hook circuit and phone is subjected to, dial-up line constitutes on microprocessor.When using city telephone network to report to the police, can in above-mentioned telephony interface, set up phone and rob line apparatus, this device comprises robs line circuit and relay.Positive and negative electrode wrong direction can add a polar protective circuit in telephony interface when this device is connected with telephone set.More than said microprocessor can be a single-chip microcomputer, for example 8031,8051 or 8098 etc.Condition of a fire sensor can connect single-chip microcomputer by a multi-channel gating switch, and multi-channel gating switch can adopt chips such as CD4051 or 74HC4051.More than said circuit for answering can constitute by the optical coupled switch circuit, for example T1L113 etc. receives dial-up circuit and can adopt the special-purpose integrated package of communication, for example 8880,870 or 8888 etc.Phone is robbed line circuit and is made of relay and its driving circuit.In microprocessor, be responsible for into information such as pager numbers with organization, address, the telephone number of coding form typing this monitoring point in advance, when the condition of a fire takes place, the signal enabling microprocessor work of sensor, connect the fire department phone by telephony interface, and automatically the coded message of microprocessor Inner is transferred to the computing machine of fire department, contain corresponding demoder in this computing machine, also the giant-screen map display can be set, to indicate place of alarm and other information.After fire department is informed of a case, can in time set out rescue, also can examine the condition of a fire by warning WorkPhone or responsible official's pager.

The utility model has overcome the deficiency that prior art can automatic fire department notification, a kind of autoalarm is provided, it should be able to be under unattended situation, in time find fire alarm, and can be in time, exactly fire alarm information is automatically offered fire department by phone, improved the safety coefficient of fire alarm monitoring significantly.

Now be described further in conjunction with the accompanying drawings and embodiments,

Fig. 1 is the utility model fundamental diagram;

Fig. 2 is the transmitter fundamental diagram;

Fig. 3 is the circuit diagram of embodiment 1.

Embodiment 1, with reference to scheming: be arranged on several condition of a fire sensors ch in monitoring place, ch.Output receive by microprocessor and telephony interface and form transmitter (1), the transmitter of each monitoring point meets the receiving station (3) of fire department by city's telephone network (2), inserts computer control center (4) again, wherein the principle of work of transmitter is with reference to Fig. 2: each condition of a fire sensor ch ₁-ch ₀Output connect singlechip CPU by multi-channel gating switch DK.Be connected on the single-chip microcomputer that circuit for answering Zh and phone are received, dial-up circuit H, the phone of being made up of relay J and its driving circuit Q is robbed line circuit and also is connected on the single-chip microcomputer simultaneously, and relay connects city's telephone network (2), its two groups of contacts answer the call respectively machine and circuit for answering.Also be connected to a polar protective circuit between circuit for answering and the relay.The principle of work of its physical circuit is with reference to Fig. 3; When the condition of a fire took place, the signal of sensor was at first by multi-channel gating switch IC ₃The input port, sending signal with Third Road is example, promptly passes through IC ₃3 pin send the P of Single Chip Microcomputer (SCM) system to ₃The input port, the P of Single Chip Microcomputer (SCM) system ₁₃Pin is sent high level, through resistance R ₂Be connected to transistor T ₄Base stage, transistor T ₂Turn-on relay J adhesive is connected transmitter and city's telephone network, finishes ruthless pre-emption (promptly cutting off other phones at any time, the preferential warning).P subsequently ₁₄Send electronegative potential, through optical coupled switch IC ₁Handoff functionality is finished in control 4,5 pin conductings.Single Chip Microcomputer (SCM) system is by receipts, dial-up circuit IC ₂Transfer to the telephone number of control center, and wait for that control center connects the handshake of confirming, after control center sent and connects the handshake of confirming, this signal was through circuit for answering IC ₃4,5 pin, input capacitance C ₃Through C ₁, R ₂Send into IC ₂Input end 2 pin, and send into Single Chip Microcomputer (SCM) system, Single Chip Microcomputer (SCM) system is promptly sent condition of a fire nidus corresponding codes information after confirming, passes through IC ₂8 pin send, through capacitor C ₂Every directly, transistor T ₁After the amplification, one sends in the local network, after transmission finishes, automatically resets on-hook.If alerting signal still exists, this transmitter can be under the CPU software control Automatic Cycle discontinuous operation, the quiescent interval can be set as requested.R among the figure ₄-R ₂₄Be the divider resistance of sensor inlet wire, to cooperate the warning device of various different operating voltages.D ₂-D ₄It is polarity newspaper protection circuit.R ₃It is the input signal feedback resistance.R ₄Be transistor T ₁Biasing.J ₂It is crystal oscillator.405 can dispose 8 in the circuit, can patrol and examine 8 * 8 tunnel sensor.Do not influence the use of telephone set during normal the monitoring

Claims (6)

1, fire alarm networking autoalarm, be made of the some condition of a fire sensors that are arranged on the monitoring place, it is characterized in that: be provided with by microprocessor and telephony interface and form transmitter, the output of condition of a fire sensor connects microprocessor, the microprocessor interface of answering the call, the circuit of answering the call again.

2, according to the described fire alarm networking of claim 1 autoalarm, it is characterized in that; Said telephony interface is to be connected with phone off-hook circuit and phone is subjected to, dial-up line on microprocessor.

3, according to the described fire alarm networking of claim 2 autoalarm, it is characterized in that: also be provided with phone and rob line apparatus in telephony interface, this device comprises robs line circuit and relay.

4, according to claim 2 or 3 described fire alarm networking autoalarms, it is characterized in that: in telephony interface, be provided with polar protective circuit.

5, according to claim 1 or 2 or 3 described fire alarm networking autoalarms, it is characterized in that: said microprocessor is a single-chip microcomputer, and condition of a fire sensor connects single-chip microcomputer by a multi-channel gating switch.

6, according to the described fire alarm networking of claim 4 autoalarm, it is characterized in that: said microprocessor is a single-chip microcomputer, and condition of a fire sensor connects single-chip microcomputer by a multi-channel gating switch.

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