CN202230589U

CN202230589U - Electrical signal acquisition monitoring device

Info

Publication number: CN202230589U
Application number: CN201120347323XU
Authority: CN
Inventors: 傅俊豪; 傅汉水; 黄紫教; 傅哲龙
Original assignee: FUJIAN JUNHAO ELECTRONICS Co Ltd
Current assignee: FUJIAN JUNHAO ELECTRONICS Co Ltd
Priority date: 2011-09-16
Filing date: 2011-09-16
Publication date: 2012-05-23
Anticipated expiration: 2021-09-16

Abstract

The utility model relates to an electrical signal acquisition monitoring device, comprising an overcurrent and short circuit signal acquisition circuit, a breaking-zero phase voltage acquisition circuit, a fire hazard alarm system linkage control isolation circuit, and a one-chip microcomputer control circuit, wherein the signals collected by the overcurrent and short circuit signal acquisition circuit and the breaking-zero phase voltage acquisition circuit are sent to a comparison circuit; the output signals of the comparison circuit and the fire hazard alarm system linkage control isolation circuit are output to a display circuit, an alarming sound drive circuit, a power off drive circuit, and a carrier wave signal phase lock circuit via the control of the one-chip microcomputer control circuit; and the output signals of the carrier wave signal phase lock circuit are output to a carrier wave signal decoding circuit via a frequency selective amplifier circuit. The electrical signal acquisition monitoring device utilizes a wire to transmit alarming data, with no need for secondary wiring, thereby substantially facilitating the construction. Moreover, the electrical signal acquisition monitoring device integrates various electrical fault signals together, thereby realizing simple control, effectively guiding the professionals to remove the faults, and realizing the objective of safe power usage.

Description

Electric signal is gathered monitoring device

Technical field

The utility model relates to a kind of monitoring device, particularly be that a kind of electric signal is gathered monitoring device.

Background technology

Electric supply line mainly causes because of faults such as overload, short circuit, electric leakage, disconnected zero, thunderbolts, and omnibearing protection need design a plurality of protecting components and could satisfy above-mentioned defencive function if desired.But will cause the element coupling difficult because of system element is many, data can not centralized control etc. problem.

The utility model content

The purpose of the utility model is to overcome above-mentioned deficiency, provides a kind of electric signal to gather monitoring device.

The utility model solves the technical scheme that its technical matters adopted: electric signal is gathered monitoring device; Comprise excess current and short-circuit signal Acquisition Circuit, disconnected zero phase voltage Acquisition Circuit, fire alarm system interlock control buffer circuit, single chip machine controlling circuit; The signal of said electric current and short-circuit signal Acquisition Circuit, disconnected zero phase voltage Acquisition Circuit collection sends to comparator circuit; The output signal of comparator circuit, fire alarm system interlock control buffer circuit exports display circuit, alert sound-driving circuit, outage driving circuit, 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 single chip machine controlling circuit and memory circuit bidirectional data transfers.

Said electric current and short-circuit signal Acquisition Circuit adopt current transformer as signal collecting element, and its output signal sends to rectification adjustment, filter integral circuit.

Said disconnected zero phase voltage Acquisition Circuit adopts voltage transformer (VT) as signal collecting element, and its output signal sends to rectification, filtering, current limliting bleeder circuit.

Said fire alarm system interlock control buffer circuit by voltage signal output end connect resistance successively, the photoelectricity coupled circuit constitutes.

Said display circuit adopts the LCD LCD.

The sound-driving circuit of said police adopts the LM386 audio-frequency power amplifier.

Through adopting above-mentioned technical scheme, the beneficial effect of the utility model is: this device adopts three-phase voltage Acquisition Circuit, overload, short circuit Acquisition Circuit, interlock control circuit acquired signal, realizes utilizing electric wire to send alert data through single chip machine controlling circuit; Do not need the secondary wiring; Bring very big facility to construction, have multiple electric fault signal and be integrated in one, it is simple to reach control; Thereby instruct the professional that fault is got rid of effectively, reach aim of safe power utilization.

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

As shown in Figure 1; The electric signal of the utility model is gathered monitoring device; Comprise excess current and short-circuit signal Acquisition Circuit 1, disconnected zero phase voltage Acquisition Circuit 2, fire alarm system interlock control buffer circuit 3, single chip machine controlling circuit 4; The signal that said electric current and short-circuit signal Acquisition Circuit 1, disconnected zero phase voltage Acquisition Circuit 2 are gathered sends to comparator circuit 11; The output signal of comparator circuit 11, fire alarm system interlock control buffer circuit 3 exports display circuit 41, alert sound-driving circuit 42, outage driving circuit 43, carrier signal phase lock circuitry 45 to through single chip machine controlling circuit 4 controls; The output signal of said carrier signal phase lock circuitry 45 sends to carrier signal decoding scheme 47 through frequency-selecting amplifier circuit 46, said single chip machine controlling circuit 4 and memory circuit 48 bidirectional data transfers.

As shown in Figure 2, when live wire passed current transformer L1, phase line had electric current to pass through, and the phase line current is according to the ac voltage signal that L1 responded to of load electric power, along with size of current changes and changes.During excess current, the In1.05 that refers generally to surpass rated current doubly, so as electric current during through current transformer L1, L1 level of current transformer can the generation voltage signal; Resistance R 7 is to capacitor C 7 electric capacity chargings, by diode D2 rectification, and through by capacitor C 6, C8, C9, the ∏ type filter integral circuit that resistance R 9 is formed; Resistance through transformation resistance R11 can change the time of discharging and recharging, and is input to the 6th pin of comparer IC6, forms the 5th pin that setting voltage value sends to comparer IC6 by resistance R 10, R12; When the 6th pin voltage of comparer IC6 during greater than its 5th pin voltage, comparer IC6 internal comparator is overturn, and comparer IC6 pin uprises level by low level; Be directly connected to the input end of photoelectric coupled circuit U4, the 7th pin output high level by comparer IC6 makes photoelectric coupled circuit U4 conducting; Its output terminal becomes low level by original high level, is connected to the 1st pin of single-chip microcomputer IC1, counts through single-chip microcomputer IC1 internal delay time device; After 3600 seconds, export high level by the 20th pin of single-chip microcomputer IC1, through single-chip microcomputer IC1 internal delay time through resistance R 28 current limlitings; Make triode VT1 conducting, promote the relay J adhesive, make power cutoff mechanism thread off and move.

The 8th, 9,10 pin of comparer IC6 are formed a threshold higher voltage comparer, and when the 9th pin voltage of comparer IC6 during greater than its 10 pin voltage, comparer IC6 internal comparator is overturn; Its 8th pin uprises level by low level, is directly connected to the 1st pin of photoelectric coupled circuit U5, by the 8th pin output high level of comparer IC6; Make photoelectric coupled circuit U5 conducting, the 3rd pin of photoelectric coupled circuit U5 becomes low level by original high level, is connected to the 2nd pin of single-chip microcomputer IC1;, divides single-chip microcomputer IC1 internal logic routine data four tunnel outputs after judging; The 20th pin output high level of first via IC1 through resistance R 28 current limlitings, makes triode VT1 conducting; Promote the relay J adhesive, make power cutoff mechanism thread off and move.The second tunnel output is without single-chip microcomputer IC1 internal delay time, by the 17th pin output audio signal of single-chip microcomputer IC1, through capacitor C 11 couplings; Be input to the 3rd pin of LM386 audio-frequency power amplifier IC4, after audio frequency amplifies, promote loudspeaker Y by its 5th output through capacitor C 12 and send chimes of doom; K1 pushes button; The low level trigger pip that the 35th pin of single-chip microcomputer IC1 is received, the 17th pin absence of audio signal output of single-chip microcomputer IC1, alert sound stops.Third Road output is formed phase lock circuitry by the multivibrator that LM567 tone decoder U1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof constitute; Its oscillation frequency is by the parameter determining of electric capacity 2C1, resistance 2R1, and carrier frequency is adjusted in the 150-300KHZ scope.Elementary L1, electric capacity 2C2, capacitor 2C3 by triode Q1, audio-frequency transformer (AFT) T constitute the frequency-selecting amplifier circuit; The 21st 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.

Audio-frequency transformer (AFT) T1, LM567 ATD U2, triode Q2, LED by connecting successively constitute the carrier signal decoding scheme; The time constant of resistance 1R1, electric capacity 1C5 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 1C1, audio-frequency transformer (AFT) T1, its secondary L3, electric capacity 1C2, electric capacity 1C3 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 1C4; After LM567 ATD U2 decoding,, make triode Q2 conducting by its 8th pin output terminal output low level; LED is lighted, and has received the carrier data signal of extension set.The four tunnel output is connected with LCD LCD IC5 by the 22nd, 23,24,25,26 of single-chip microcomputer IC1, by LCD LCD IC5 demonstration current state, explains that using power supply always has occurred electric fault, reaches the purpose of real time and on line monitoring.

When voltage transformer (VT) B1 primary coil has AC220V voltage, its secondary output AC2.2V, voltage transformer (VT) B1 was by linear output in 100: 1; Through diode D1 rectification, capacitor C 1, C2 filtering, be connected to comparer IC6 the 3rd, 2 pin by resistance R 1, R2 current limliting dividing potential drop, when the 3rd pin voltage of comparer IC6 during greater than its 2nd pin voltage; Comparer IC6 internal comparator is overturn, and its 1st pin uprises level by low level, is directly connected to the input end of photoelectric coupled circuit U3; The 1st pin output high level by comparer IC6 makes photoelectric coupled circuit U3 conducting, and the 3rd pin of photoelectric coupled circuit U3 becomes low level by original high level; Be connected to the 13rd pin of single-chip microcomputer IC1, when single-chip microcomputer IC1 detects I/O mouth the 13rd pin and is low level, judge the line fault; Through the programmed control of single-chip microcomputer IC1 internal logic, by the 20th pin output high level of single-chip microcomputer IC1, through resistance R 28 current limlitings; Make triode VT1 conducting, promote the relay J adhesive, make power cutoff mechanism thread off and move.

When fire alarm system has the output of DC24V voltage signal,, be connected to the 1st pin of photoelectricity coupled circuit U6 through resistance R 20 current limlitings; Make photoelectricity coupled circuit U6 conducting, be input to the 3rd pin of single-chip microcomputer IC1, become low level by original high level; When single-chip microcomputer IC1 detects the I/O mouth and is low level, when the inner continuous detecting 0.5s of single-chip microcomputer IC1, by single-chip microcomputer IC1 the 20th pin output high level; Through resistance R 28 current limlitings; Make triode VT1 conducting, promote the relay J adhesive, make power cutoff mechanism thread off and move.

Memory IC 3 is used for the store alarms data, and the 1st, 2,3,4 pin of memory IC 3 transmit reading of data through 7,8,27,28 pin of parallel data and single-chip microcomputer IC1, and single-chip microcomputer IC1 internal data is recovered, and avoid occurring the endless loop state.

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 to the scope that the utility model is contained.

Claims

1. electric signal is gathered monitoring device; It is characterized in that: comprise excess current and short-circuit signal Acquisition Circuit (1), disconnected zero phase voltage Acquisition Circuit (2), fire alarm system interlock control buffer circuit (3), single chip machine controlling circuit (4); The signal that said electric current and short-circuit signal Acquisition Circuit (1), disconnected zero phase voltage Acquisition Circuit (2) are gathered sends to comparator circuit (11); The output signal of comparator circuit (11), fire alarm system interlock control buffer circuit (3) exports display circuit (41), alert sound-driving circuit (42), outage driving circuit (43), carrier signal phase lock circuitry (45) to through single chip machine controlling circuit (4) control, and the output signal of said carrier signal phase lock circuitry (45) sends to carrier signal decoding scheme (47) through frequency-selecting amplifier circuit (46).

2. electric signal according to claim 1 is gathered monitoring device, it is characterized in that: said single chip machine controlling circuit (4) and memory circuit (48) bidirectional data transfers.

3. electric signal according to claim 1 is gathered monitoring device, it is characterized in that: said electric current and short-circuit signal Acquisition Circuit (1) adopt current transformer as signal collecting element, and its output signal sends to rectification adjustment, filter integral circuit.

4. electric signal according to claim 1 is gathered monitoring device, it is characterized in that: said disconnected zero phase voltage Acquisition Circuit (2) adopts voltage transformer (VT) as signal collecting element, and its output signal sends to rectification, filtering, current limliting bleeder circuit.

5. electric signal according to claim 1 is gathered monitoring device, it is characterized in that: said fire alarm system interlock control buffer circuit (3) by voltage signal output end connect resistance successively, the photoelectricity coupled circuit constitutes.

6. electric signal according to claim 1 is gathered monitoring device, it is characterized in that: said display circuit (41) adopts the LCD LCD.

7. electric signal according to claim 1 is gathered monitoring device, it is characterized in that: the sound-driving circuit of said police (42) adopts the LM386 audio-frequency power amplifier.