CN2246360Y - Telephone/radio calling alarm - Google Patents

Abstract

The utility model relates to a telephone/radio calling alarm. The utility model adopts a memory to storage information or numbers which are preestablished by an owner. A trigger signal automatically inputs the preestablished numbers into a public telephone network through an alarm device; a pilferage or an abnormal situation which occurs in a house or on site can be alarmed, and the owner can also be informed in time; an alarm signal can be received accurately even if the principal is not on site. The utility model has the advantages of low cost and high reliability.

Description

Phone/radio call alarm

The utility model relates to a kind of alarm, relates in particular to a kind of phone/radio call alarm.

In traditional warning device, trigger alarm, send chimes of doom, thereby attract much attention by triggering signal; Or link night shift room by circuit and notify the operator on duty, these methods all are subjected to the restriction of time and region, can not directly notify the party or because operator on duty's dereliction of duty can not handle at once and report to the police and cause unnecessary loss.

The purpose of this utility model provides and a kind ofly can make default signal and telephone number import phone/radio call alarm of radio call owner automatically by public telephone network when situation such as theft takes place.

The purpose of this utility model is achieved in that a kind of phone/radio call alarm, the pulse input end contact of trigger is signaled, its reset terminal passes through or door is connected with the output of decoding counter, the input of control counter and the output of oscillator join, the output that it is characterized in that control counter directly and memory join, memory, control counter, oscillator, the working power of decoding counter is provided by the connection of trigger actuation switching circuit, and the output of memory directly drives another switching circuit public telephone network is imported in dial impulse.

The utility model adopts memory to store predefined information of owner or number, triggering signal is imported telephone network by warning device automatically with this preset number, the party in time committing theft of occurring of scene or family or abnormal conditions reported to the police and notifies owner, even also can not receive alarm signal at the scene exactly.Because the utility model does not use microprocessor, not only reduce the cost of device greatly, and improve reliability greatly, go back because the numerical portion of this device and the interface of telephone line are isolated fully by solid-state relay, both avoid the phase mutual interference, reached the networking requirement again easily.This device is practical, has very big market potential.

Fig. 1 is a fundamental diagram of the present utility model;

Fig. 2 is the utility model input form schematic diagram.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Among Fig. 1, as mains switch SW ₁₁When closed, because R ₁₁, C ₃Effect, make or the door IC _5-1Output pin 10 produce a positive pulse and be added to double D trigger IC ₆Reset terminal 4, make trigger IC ₆Output 1 output low level make switching circuit SSR ₂End IC ₁～IC ₄Non-transformer, circuit working is in armed state.

When not having alarm signal, input P ₁Open circuit is because R ₁₆The effect of pull-up resistor, Q ₁Saturation conduction, thus make trigger IC ₆ Pulse input end 3 remain on low level, alarm is not worked.

And as input P ₁1 pin and 3 pin when being triggered, Q ₁Base potential dragged down, make it become cut-off state from the saturation conduction state, collector potential raises, this moment trigger IC ₆ Pulse input end 3 under the effect on this saltus step electrical level rising edge, by pull-up resistor R ₁₀The logical one that produces is latching to trigger IC ₆Output 1, its current potential is raise approximately to supply voltage, through current-limiting resistance R ₉To switching circuit SSR ₂Input provides drive current, makes switching circuit SSR ₂The load end conducting, IC ₁, IC ₂, IC ₃, IC ₄Obtain power supply, at this moment multivibrator IC ₃Produce vibration, and beginning is to control counter IC ₂The output pulse.

At switching circuit SSR ₂In the time of conducting, through R ₃, C ₂Producing the positive pulse that resets passes through or door IC _5-2Be added to control counter IC ₂Reset terminal 11, make control counter IC ₂Reset, thereby make memory IC ₁Can read its data since 0 address; This reset pulse passes through or door IC simultaneously _5-3Be added to decoding counter IC ₄Reset terminal 15 it is resetted; Because reset pulse also is added to memory IC ₁Output intelligence end 22, avoid at reseting period memory IC ₁Dateout makes system works more reliable, after the reset pulse, and memory IC ₁Output intelligence end 22 be low level, memory IC ₁Just can dateout.

At control counter IC ₂Effect under, memory IC ₁Data read by sequence of addresses, again by current-limiting resistance R ₅Add to switching circuit SSR ₁The driving input because switching circuit SSR ₁Be solid-state relay, its on-state impedance is little, and the off-state impedance is big, and drive current is very little, memory IC ₁Output just can do direct driving without amplification, by switching circuit SSR ₁Control makes to occur on the telephone wire and the corresponding break-make sequence of will dialling the number, thereby forms pulse dialing.

In dialing procedure, memory IC ₁19 pin output low level always, have only after one group of dial action is finished, its 19 pin is just exported a positive pulse, this positive pulse through or door IC _5-2Make control counter IC ₂Reset, for dialing is next time prepared; This positive pulse is sent to decoding counter IC simultaneously ₄Input end of clock 14, make decoding counter IC ₄Counting adds 1 and translate decoding counter IC ₄Output by switch SW ₁1～7 selection, for example, if redial a sets of numbers three times when require reporting to the police, then should be with switch SW ₁The 3rd is closed, and other positions disconnect, like this, and memory IC ₁After 3 positive pulses of the 19th pin output, decoding counter IC ₄The 7th pin will become high level, this high level through or door IC _5-1Make trigger IC ₆Be reset, thus control switch circuit SSR ₂Turn-off IC ₁, IC ₂, IC ₃, IC ₄Power supply, circuit reenters armed state.

The utility model is accepted the detection probe of various ways, often drives contact-making switch if use, and then two ends of switch should be connected on input P ₁1 pin and 3 pin, like this when contact-making switch is closed, promptly produces and report to the police; If use the slot type photoelectrical coupler, then should be connected to input P by mode shown in Figure 2 ₁, like this, power supply is through R ₁₈Transmitting tube to photoelectrical coupler after the current limliting provides operating current, and under normal circumstances, the transmitting tube of photoelectrical coupler and the receiving tube thing that is blocked separates, so not conducting of receiving tube, thereby makes Q ₁Saturation conduction, alarm is not worked, and when shelter is removed, receiving tube is conducting immediately, and alarm is started working.

With reference to Fig. 1, R ₁, R ₂, C ₁Be oscillator IC ₃Outward element, decision IC ₃Cycle of oscillation; R ₄, R ₁₉, R ₂₈It is the pull down resistor of IC; R ₆Be dialing light-emitting diode D ₁Current-limiting resistance; R ₇The load resistance of telephone line when being dialing; R ₁₄Be Q ₁Collector load resistor; R ₁₅Be Q ₁The base stage current-limiting resistance; K is a Test Switchboard, and whether be used for check system work normal.

The utility model can also use memory paging control technology that circuit is expanded in force, makes it can become the enhancement mode alarm of a plurality of triggering signals of direct processing.

Claims (2)

1, a kind of phone/radio call alarm, trigger IC ₆Pulse input end contact signalling P ₁, its reset terminal passes through or door IC ₅With decoding counter IC ₄Output connect control counter IC ₂Input and oscillator IC ₃Output join, it is characterized in that control counter IC ₂Output directly and memory IC ₄Join IC ₁～IC ₄Working power by trigger IC ₆Driving switch circuit SSR ₂Connection memory IC is provided ₁The direct driving switch circuit of output SSR ₁Public telephone network is imported in dial impulse.

2, phone according to claim 1/radio call alarm is characterized in that decoding counter IC ₄Output and selector switch SW ₁Cooperation is to set the number of times that redials of warning number.

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