CN202111451U

CN202111451U - Monitoring module for overloaded power consumption

Info

Publication number: CN202111451U
Application number: CN2011202262833U
Authority: CN
Inventors: 傅梨花
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-30
Filing date: 2011-06-30
Publication date: 2012-01-11
Anticipated expiration: 2021-06-30

Abstract

The utility model relates to a monitoring module, in particular to the monitoring module for overloaded power consumption. The monitoring module comprises an over-current detection circuit, a singlechip control circuit, a breaker drive circuit, an alarming circuit and a carrier signal phase locking circuit, wherein, signals acquired by the over-current detection circuit are send to the singlechip control circuit through a voltage comparison circuit; the singlechip control circuit controls and outputs the signals to the breaker drive circuit, the alarming circuit and the carrier signal phase locking circuit; output signals of the carrier signal phase locking circuit are send to a carrier signal decoding circuit through a frequency selecting amplifier circuit; when a power supply circuit surpasses a rated current, a singlechip is used for controlling and an alarming signal is given out by the monitoring module at the field so as to automatically drive a breaker to drop out of a protection power supply line or equipment, and the signals are sent to a carrier mainframe through the carrier signals for alarming so as to realize the remote monitoring for the overloaded power consumption protection.

Description

Excess load power monitoring module

Technical field

The utility model relates to a kind of monitoring module, particularly be a kind of excess load power monitoring module.

Background technology

China's building eighties accounts for about 30% of total building, because power consumption design at that time is less, along with the raising of Chinese economic development and resident's modern life level; The big increase of power consumption; Can't satisfy current power consumption demand, excess load often takes place in its supply line, and the electrical fire accident that causes also increases thereupon; And traditional architecture can not network because of wiring reason electrical fire protector, can not adapt to modern intelligentized requirement.

The utility model content

The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of excess load power monitoring module is provided.

The utility model solves the technical scheme that its technical problem adopted: excess load power monitoring module; Comprise overcurrent sensing circuit, single chip machine controlling circuit, circuit breaker drive circuit, warning circuit and carrier signal phase lock circuitry; The signal of said overcurrent sensing circuit collection sends to single chip machine controlling circuit through voltage comparator circuit; Single chip machine controlling circuit control exports circuit breaker drive circuit, warning circuit and carrier signal phase lock circuitry to, and the output signal of said carrier signal phase lock circuitry is through frequency selective amplifier circuit transmission to carrier signal decoding circuit.

Said overcurrent sensing circuit sends to diode D1, capacitor C 1, resistance R 1, capacitor C 2, capacitor C 3 rectifications, Filtering Processing by the induced signal of current transformer LA output and constitutes.

Said voltage comparator circuit adopts LM358 voltage comparator ic 2.

Said carrier signal phase lock circuitry is made up of LM567 tone decoder U1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof.

Said frequency selective amplifier circuit is made up of elementary L1, electric capacity 2C2, the capacitor 2C3 of triode VT1, audio frequency transformer T, and sends data-signal through telephone wire to the carrier signal decoding circuit through secondary L2, the electric capacity 2C4 of audio frequency transformer T.

Said carrier signal decoding circuit is made up of the audio frequency transformer 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: when supply line surpasses load current value; Through Single-chip Controlling, alarm signal is sent at the scene, until automatic driving circuit breaker tripping protection supply line or equipment; And be sent to the carrier wave main frame through carrier signal and send warning, realize the remote monitoring of excess load electricity protection.

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 excess load power monitoring module of the utility model; Comprise overcurrent sensing circuit 1, single chip machine controlling circuit 2, circuit breaker drive circuit 3, warning circuit 4 and carrier signal phase lock circuitry 5; The signal that said overcurrent sensing circuit 1 is gathered sends to single chip machine controlling circuit 2 through voltage comparator circuit 11; Single chip machine controlling circuit 2 controls export circuit breaker drive circuit 3, warning circuit 4 and carrier signal phase lock circuitry 5 to, and the output signal of said carrier signal phase lock circuitry 5 transfers to carrier signal decoding circuit 7 through frequency selective amplifier circuit 6.

Said overcurrent sensing circuit 1 sends to diode D1, capacitor C 1, resistance R 1, capacitor C 2, capacitor C 3 rectifications, Filtering Processing by the induced signal of current transformer LA output and constitutes; When the phase line of passing current transformer LA has electric current to pass through; The secondary generation induced signal of current transformer LA; This signal is through diode D1 rectification, capacitor C 1 filtering, resistance R 1 current limliting; Adjustment potentiometer W is used for check and correction and the linear output of input voltage, and this signal is input to the 2nd pin of LM358 voltage comparator ic 2, forms the voltage reference setting voltage value by the 3rd pin of resistance R 2, resistance R 3, resistance R 4, LM358 voltage comparator ic 2; When surpassing 1.5 times of rated current, be judged as excess load.The 2nd pin magnitude of voltage of LM358 voltage comparator ic 2 is during greater than its 3rd pin magnitude of voltage, the upset of LM358 voltage comparator ic 2 internal comparator, the 1st pin output high level signal of LM358 voltage comparator ic 2; Through resistance R 5 current limlitings, be input to the 37th pin I/O end of single-chip microcomputer IC1,, divides single-chip microcomputer IC1 internal processes three tunnel outputs after handling judgement; First via output is by the 28th pin output high level signal of single-chip microcomputer IC1; Through resistance R 6 current limlitings, make triode Q1 conducting, the relay J adhesive; Its contact J-1 promotes circuit breaker tripping protection supply line or equipment by transferring normally closed point normal battle to; The second tunnel output is by the 3rd pin output low level signal of single-chip microcomputer IC1, and through resistance R 7 current limlitings, it is electric that loud speaker BDD is got, and sends and " tick.。。" alarm sound.Third Road output is formed carrier signal phase lock circuitry 5 by the multivibrator that LM567 tone decoder U1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof constitute; Its frequency of oscillation 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 VT1, audio frequency transformer T constitute frequency selective amplifier circuit 6; The 7th 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 line and is sent by secondary L2, the electric capacity 2C4 of audio frequency transformer T, sends data-signal to the carrier wave main frame.

Said carrier signal decoding circuit 7 is made up of the audio frequency transformer T1, LM567 ATD U2, triode VT2, the LED that connect successively; 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 T through electric capacity 1C1, audio frequency transformer T1, its secondary L3, electric capacity 1C2, electric capacity 1C3 form a carrier wave frequency-selective 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 VT2 conducting by its 8th pin output output low level; LED is lighted; The carrier data signal of receiving extension set is described, the excess load fault has appearred in expression supply line or equipment, reaches the purpose of wireless remote alarming monitoring.

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. excess load power monitoring module; It is characterized in that: comprise overcurrent sensing circuit (1), single chip machine controlling circuit (2), circuit breaker drive circuit (3), warning circuit (4) and carrier signal phase lock circuitry (5); The signal that said overcurrent sensing circuit (1) is gathered sends to single chip machine controlling circuit (2) through voltage comparator circuit (11); Single chip machine controlling circuit (2) control exports circuit breaker drive circuit (3), warning circuit (4) and carrier signal phase lock circuitry (5) to, and the output signal of said carrier signal phase lock circuitry (5) transfers to carrier signal decoding circuit (7) through frequency selective amplifier circuit (6).

2. excess load power monitoring module according to claim 1 is characterized in that: said overcurrent sensing circuit (1) sends to diode D1, capacitor C 1, resistance R 1, capacitor C 2, capacitor C 3 rectifications, Filtering Processing by the induced signal of current transformer LA output and constitutes.

3. excess load power monitoring module according to claim 1 is characterized in that: said voltage comparator circuit (11) adopts LM358 voltage comparator ic 2.

4. excess load power monitoring module according to claim 1 is characterized in that: said carrier signal phase lock circuitry (5) is made up of LM567 tone decoder U1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof.

5. excess load power monitoring module according to claim 1; It is characterized in that: said frequency selective amplifier circuit (6) is made up of elementary L1, electric capacity 2C2, the capacitor 2C3 of triode VT1, audio frequency transformer T, and sends data-signal through telephone wire to carrier signal decoding circuit (7) through secondary L2, the electric capacity 2C4 of audio frequency transformer T.

6. according to claim 1 or 5 described excess load power monitoring modules, it is characterized in that: said carrier signal decoding circuit (7) is made up of the audio frequency transformer T1, LM567 ATD U2, triode VT2 and the LED that connect successively.