CN202189452U

CN202189452U - Communication receiving host machine for fire alarm

Info

Publication number: CN202189452U
Application number: CN2011202606450U
Authority: CN
Inventors: 傅志海
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2012-04-11
Anticipated expiration: 2021-07-22

Abstract

The utility model relates to the field of electronic communication, in particular to a communication receiving host machine for fire alarm, comprising a load power supply detection circuit, a charging circuit detection circuit, a single-chip microcomputer control circuit, a display circuit, a voice alarm circuit and a carrier wave signal phase locking circuit, wherein signals collected by the load power supply detection circuit are transmitted to a voltage comparison circuit, the output signals of the voltage comparison circuit and the charging circuit detection circuit are output to the display circuit, the voice alarm circuit and the carrier wave signal phase locking circuit through the single-chip microcomputer control circuit, and the output signals of the carrier wave signal phase locking circuit are transmitted to a carrier wave signal decoding circuit through a frequency selective amplifier circuit. The communication receiving host machine for fire alarm is provided with the function of detecting the charging circuits of a load power supply and a standby power supply, and when the power supply circuits are abnormal, electric power carrier signals are driven and controlled by the single-chip microcomputer to transmit an alarm signal to the host, thereby effectively ensuring the system to normally operate.

Description

A kind of communications reception main frame of fire alarm

Technical field

The utility model relates to electronic communication field, particularly be a kind of communications reception main frame of fire alarm.

Background technology

Fire alarm system is made up of fire detector, fire alarm main frame; Traditional fire alarm main frame only has the communication check function, and adopts wire transmission mode, makes troubles for construction or secondary decoration and increases engineering cost; And most main frame can not detect the fault of load power source circuit and standby power supply charging circuit; The power supply of fire alarm main frame is supplied with and is required to have high uninterrupted power source supply effect, in case outage, total system will be in paralyzed state.

The utility model content

The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of communications reception main frame of fire alarm is provided.

The utility model solves the technical scheme that its technical matters adopted: a kind of communications reception main frame of fire alarm; Comprise load power source testing circuit, charging circuit testing circuit, single chip machine controlling circuit, display circuit, voice alarm circuit and carrier signal phase lock circuitry; The signal of said load power source testing circuit collection sends to voltage comparator circuit; The output signal of voltage comparator circuit and charging circuit testing circuit exports display circuit, voice alarm circuit and carrier signal phase lock circuitry to through single chip machine controlling circuit control, and the output signal of said carrier signal phase lock circuitry sends to the carrier signal decoding scheme through the frequency-selecting amplifier circuit.

Said load power source testing circuit connects diode D1, electric capacity 1C1, electric capacity 1C2, resistance R 1, resistance R 2 successively by the secondary output end of transformer LB and constitutes.

The output terminal of said voltage comparator circuit is connected with photoelectrical coupler IC4.

Said charging circuit testing circuit connects relay J 1, contact switch J1-1, resistance R 10, photoelectrical coupler I C5 successively by the output terminal of charge power supply LQ and constitutes.

Said voice alarm circuit mainly is made up of photoelectrical coupler IC7, transistor Q3,9561 speech chip IC6, LM386 audio-frequency power amplifier IC8 Homeway.com Chinese percussion instrument Y.

Said carrier signal phase lock circuitry is made up of LM567 tone decoder U1 and peripheral electric capacity 1C1, resistance 1R1, resistance 1R2 thereof.

Said frequency-selecting amplifier circuit is made up of elementary L1, electric capacity 1C2, the capacitor 1C3 of triode VT1, audio-frequency transformer (AFT) T, and sends data-signal through telephone wire to the carrier signal decoding scheme through secondary L2, the electric capacity 1C4 of audio-frequency transformer (AFT) T.

Said carrier signal decoding scheme is made up of the audio-frequency transformer (AFT) T1, LM567 ATD U2, triode VT2 and the LED that connect successively.

Through adopting above-mentioned technical scheme; The beneficial effect of the utility model is: this device has the function that detects load power source and standby power supply charging circuit; When its supply line is undesired; Send alerting signal through Single-chip Controlling driving electric carrier signal to main frame, effectively the normal operation of safeguards system.

Description of drawings

Fig. 1 is the frame assumption diagram of the utility model;

Fig. 2 is the circuit theory diagrams of the utility model.

Embodiment

Like Fig. 1, shown in Figure 2; The communications reception main frame of a kind of fire alarm of the utility model; Comprise load power source testing circuit 1, charging circuit testing circuit 2, single chip machine controlling circuit 3, display circuit 4, voice alarm circuit 5 and carrier signal phase lock circuitry 6; The signal that said load power source testing circuit 1 is gathered sends to voltage comparator circuit 11; The output signal of voltage comparator circuit 11 and charging circuit testing circuit 2 exports display circuit 4, voice alarm circuit 5 and carrier signal phase lock circuitry 6 to through single chip machine controlling circuit 3 controls, and the output signal of said carrier signal phase lock circuitry 6 sends to carrier signal decoding scheme 8 through frequency-selecting amplifier circuit 7.

Said load power source testing circuit 1 connects diode D1, electric capacity 1C1, electric capacity 1C2, resistance R 1, resistance R 2 successively by the secondary output end of transformer LB and constitutes; When the secondary output voltage of transformer LB is 2.2V; After diode D1 rectification, resistance R 2 dividing potential drops, be input to the 3rd pin of voltage comparator ic 3, resistance R 3, R4 set comparing voltage value for voltage comparator ic 3 is provided.When its 2nd pin current potential of the 3rd pin voltage ratio of voltage comparator ic 3 is high, the 1st pin of voltage comparator ic 3 output electronegative potential.When the elementary input voltage of transformer LB was lower than 150V, during P1 point current potential 1.5V, the 3rd pin current potential of voltage comparator ic 3 was lower than its 2nd pin current potential; Voltage comparator ic 3 the 1st pin output high level makes voltage comparator ic 3 conductings through the resistance R dividing potential drop, and the P2 point of photoelectrical coupler IC4 is a low level; Its output signal sends to the 24th pin of single-chip microcomputer IC1; After the computing of single-chip microcomputer IC1 internal processes was judged, Fen Sanlu sent control signal, and first via output is sent data-signal by single-chip microcomputer IC1 to display IC2; Show current alarm parameters information by display IC2; The second tunnel output promotes photoelectrical coupler IC7 conducting by the 37th pin output low level signal of single-chip microcomputer IC1 through electronics R16, and triode Q3 also is in conducting simultaneously; The 1st pin of 9561 speech chip IC6 obtains working power, and LM386 audio-frequency power amplifier IC8 also gets the electrician and does.The 2nd pin output audio signal by 9561 speech chip IC6; Be input to the 3rd pin of LM386 audio-frequency power amplifier IC8 through capacitor C 4 couplings; Audio power amplifies, and regulator potentiometer W can change alert acoustical power, by the 6th pin output of LM386 audio-frequency power amplifier I C8; Amplify through capacitor C 6 couplings, promote news Chinese percussion instrument Y and send undervoltage warning.Third Road output is formed carrier signal phase lock circuitry 6 by the multivibrator that LM567 tone decoder U1 and peripheral electric capacity 1C1, resistance 1R1, resistance 1R2 thereof constitute; Its oscillation frequency is by the parameter determining of electric capacity 1C1, resistance 1R1, and carrier frequency is adjusted in the 150-300KHZ scope.Elementary L1, electric capacity 1C2, capacitor 1C 3 by triode VT1, audio-frequency transformer (AFT) T constitute frequency-selecting amplifier circuit 7; The 3rd pin output high level signal by single-chip microcomputer IC1; Make LM567 tone decoder U1 obtain working power; LM567 tone decoder U1 starts working, and is coupled on local telephone network speaking wire or the AC network AC220V power lead and is sent by secondary L2, the electric capacity 1C4 of audio-frequency transformer (AFT) T, sends data-signal to the carrier wave main frame.Said carrier signal decoding scheme 8 is made up of the audio-frequency transformer (AFT) T1, LM567 ATD U2, triode VT2, the LED that connect successively; The time constant of resistance 2R1, electric capacity 2C5 network has determined the voltage controlled oscillator of LM567 ATD U2; When the carrier wave extension set when main frame sends 150-300KHZ carrier wave command signal; Be coupled to the secondary L3 of audio-frequency transformer (AFT) T through electric capacity 2C1, audio-frequency transformer (AFT) T1, its secondary L3, electric capacity 2C2, electric capacity 2C3 form a carrier wave frequency selection network.Signal after the frequency-selecting is coupled to the 3rd pin signal input part of LM567 ATD U2 through electric capacity 2C4; After LM567 ATD U2 decoding; By its 8th pin output terminal output low level, make triode VT2 conducting, LED is lighted; Received the carrier data signal of extension set, explained that under-voltage fault appears in load power source.

Said charging circuit testing circuit 2 connects relay J 1, contact switch J1-1, resistance R 10, photoelectrical coupler IC5 successively by the output terminal of charge power supply LQ and constitutes; When charge power supply LQ voltage is DC24V; Relay J 1 adhesive, its contact switch J1-1 be closed, make photoelectrical coupler IC5 conducting through resistance R 10 current limlitings; P3 point current potential is the 25th pin that electronegative potential is connected to single-chip microcomputer IC1, explains that charging circuit is normal.When charge power supply LQ voltage was lower than DC20V, relay J 1 discharged, its contact switch J1-1 breaks off, do not have voltage output, and photoelectrical coupler IC5 is in state of saturation; P3 point current potential is the 25th pin that noble potential is connected to single-chip microcomputer IC1, explains that the charging circuit fault appears in charging circuit, after the computing of single-chip microcomputer IC1 internal processes is judged; Divide three the tunnel to send control signal; First via output is sent data-signal by single-chip microcomputer IC1 to display IC2, shows current alarm parameters information by display IC2, and the second tunnel output is by the 37th pin output low level signal of single-chip microcomputer IC1; Promote photoelectrical coupler IC7 conducting through electronics R16; Triode Q3 also is in conducting simultaneously, and the 1st pin of 9561 speech chip I C6 obtains working power, and LM386 audio-frequency power amplifier IC8 also gets the electrician and does.The 2nd pin output audio signal by 9561 speech chip IC6; Be input to the 3rd pin of LM386 audio-frequency power amplifier IC8 through capacitor C 4 couplings; Audio power amplifies; Regulator potentiometer W can change alert acoustical power, is exported after capacitor C 6 couplings are amplified by the 6th pin of LM386 audio-frequency power amplifier IC8, promotes news Chinese percussion instrument Y and sends the charging circuit warning.Third Road output is formed carrier signal phase lock circuitry 6 by the multivibrator that LM567 tone decoder U1 and peripheral electric capacity 1C1, resistance 1R1, resistance 1R2 thereof constitute; Its oscillation frequency is by the parameter determining of electric capacity 1C1, resistance 1R1, and carrier frequency is adjusted in the 150-300KHZ scope.Elementary L1, electric capacity 1C2, capacitor 1C 3 by triode VT1, audio-frequency transformer (AFT) T constitute frequency-selecting amplifier circuit 7; The 3rd pin output high level signal by single-chip microcomputer IC1; Make LM567 tone decoder U1 obtain working power; LM567 tone decoder U1 starts working, and is coupled on local telephone network speaking wire or the AC network AC220V power lead and is sent by secondary L2, the electric capacity 1C4 of audio-frequency transformer (AFT) T, sends data-signal to the carrier wave main frame.Said carrier signal decoding scheme 8 is made up of the audio-frequency transformer (AFT) T1, LM567 ATD U2, triode VT2, the LED that connect successively; The time constant of resistance 2R1, electric capacity 2C5 network has determined the voltage controlled oscillator of LM567 ATD U2; When the carrier wave extension set when main frame sends 150-300KHZ carrier wave command signal; Be coupled to the secondary L3 of audio-frequency transformer (AFT) T through electric capacity 2C1, audio-frequency transformer (AFT) T1, its secondary L3, electric capacity 2C2, electric capacity 2C3 form a carrier wave frequency selection network.Signal after the frequency-selecting is coupled to the 3rd pin signal input part of LM567 ATD U2 through electric capacity 2C4; After LM567 ATD U2 decoding; By its 8th pin output terminal output low level, make triode VT2 conducting, LED is lighted; Received the carrier data signal of extension set, explained that charging circuit breaks down.

An above-described preferred embodiment that is merely the utility model can not limit the scope that this practicality is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.

Claims

1. the communications reception main frame of a fire alarm; It is characterized in that: comprise load power source testing circuit (1), charging circuit testing circuit (2), single chip machine controlling circuit (3), display circuit (4), voice alarm circuit (5) and carrier signal phase lock circuitry (6); The signal that said load power source testing circuit (1) is gathered sends to voltage comparator circuit (11); The output signal of voltage comparator circuit (11) and charging circuit testing circuit (2) exports display circuit (4), voice alarm circuit (5) and carrier signal phase lock circuitry (6) to through single chip machine controlling circuit (3) control, and the output signal of said carrier signal phase lock circuitry (6) sends to carrier signal decoding scheme (8) through frequency-selecting amplifier circuit (7).

2. the communications reception main frame of a kind of fire alarm according to claim 1 is characterized in that: said load power source testing circuit (1) connects diode D1, electric capacity 1C1, electric capacity 1C2, resistance R 1, resistance R 2 successively by the secondary output end of transformer LB and constitutes.

3. the communications reception main frame of a kind of fire alarm according to claim 1, it is characterized in that: the output terminal of said voltage comparator circuit (11) is connected with photoelectrical coupler IC4.

4. the communications reception main frame of a kind of fire alarm according to claim 1 is characterized in that: said charging circuit testing circuit (2) connects relay J 1, contact switch J1-1, resistance R 10, photoelectrical coupler IC5 successively by the output terminal of charge power supply LQ and constitutes.

5. the communications reception main frame of a kind of fire alarm according to claim 1, it is characterized in that: said voice alarm circuit (5) mainly is made up of photoelectrical coupler IC7, transistor Q3,9561 speech chip IC6, LM386 audio-frequency power amplifier IC8 Homeway.com Chinese percussion instrument Y.

6. the communications reception main frame of a kind of fire alarm according to claim 1 is characterized in that: said carrier signal phase lock circuitry (6) is made up of LM567 tone decoder U1 and peripheral electric capacity 1C1, resistance 1R1, resistance 1R2 thereof.

7. the communications reception main frame of a kind of fire alarm according to claim 1; It is characterized in that: said frequency-selecting amplifier circuit (7) is made up of elementary L1, electric capacity 1C2, the capacitor 1C3 of triode VT1, audio-frequency transformer (AFT) T, and sends data-signal through telephone wire to carrier signal decoding scheme (8) through secondary L2, the electric capacity 1C4 of audio-frequency transformer (AFT) T.

8. according to the communications reception main frame of claim 1 or 7 described a kind of fire alarms, it is characterized in that: said carrier signal decoding scheme (8) is made up of the audio-frequency transformer (AFT) T1, LM567 ATD U2, triode VT2 and the LED that connect successively.