CN202110264U

CN202110264U - Monitoring device of aging of electrical element

Info

Publication number: CN202110264U
Application number: CN 201120200006
Authority: CN
Inventors: 蒋正坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-15
Filing date: 2011-06-15
Publication date: 2012-01-11
Anticipated expiration: 2021-06-15

Abstract

The utility model relates to a monitoring device, and especially relates to a monitoring device of aging of an electrical element comprising a temperature detection circuit, an electrical switch trigger circuit, a one-chip microcomputer control circuit, a display circuit, a heating wire drive circuit and a frequency selective amplifier circuit. An output terminal of the temperature detection circuit is connected with an input terminal of an A/D data transition circuit; output terminals of the A/D data transition circuit and the electrical switch trigger circuit are connected with the one-chip microcomputer control circuit; the one-chip microcomputer control circuit outputs and is connected with the display circuit, the heating wire drive circuit and a phase lock circuit in a pilot connection; an output terminal of the phase lock circuit is connected with a carrier wave signal decoding circuit through the frequency selective amplifier circuit; and when the temperature in an electrical element lab is too high or too low, and a switch is in a misoperation and released, a collected signal of a temperature sensor and a switch input signal are controlled by the one-chip microcomputer, and an alarm signal is sent to the personnel on duty through a carrier wave signal, and aging of an electrical element is monitored online.

Description

The electrical equipment supervising device that wears out

Technical field

The utility model relates to a kind of supervising device, particularly be the aging supervising device of a kind of electrical equipment.

Background technology

When electrical equipment comprised dual power supply changing device, isolating switch, the manufacturing of little disconnection pass, standard temperature should be at 40 degree high temperature ageings, could satisfy the national standard testing requirements.But in ageing process, in ageing process, misoperation is arranged, or temperature control is too high or too low, all can influences the aging of electrical equipment, and existing electrical equipment is aging all needs artificial on-the-spot supervision if any certain switch, very inconvenient.

The utility model content

The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of electrical equipment supervising device that wears out is provided.

The utility model solves the technical scheme that its technical matters adopted: the electrical equipment supervising device that wears out; Comprise temperature sensing circuit, electric switch trigger circuit, single chip machine controlling circuit, display circuit, heating wire driving circuit and frequency-selecting amplifier circuit; The output terminal of said temperature sensing circuit connect D the input end of data converting circuit; D the output terminal of data converting circuit and electric switch trigger circuit be connected to single chip machine controlling circuit; By single chip machine controlling circuit output control linkage to display circuit, heating wire driving circuit and phase lock circuitry, the output terminal of said phase lock circuitry is connected to the carrier signal decoding scheme through the frequency-selecting amplifier circuit.

Said temperature sensing circuit, is sent to AD623 operational amplifier IC3 and constitutes after the rectifying and wave-filtering signal Processing by the output signal of K type temperature sensor Q.

Said electric switch trigger circuit are made up of the output terminal connection resistance 3R1 of electric switch auxiliary contact T2.

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

Said frequency-selecting amplifier circuit is made up of elementary L1, electric capacity 2C2, the capacitor 2C3 of triode VT1, audio-frequency transformer (AFT) T, and sends data-signal through electric wire to the carrier signal decoding scheme through secondary L2, the electric capacity 2C4 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, the LED that connect successively.

Through adopting above-mentioned technical scheme; The beneficial effect of the utility model is: when electrical equipment aging test indoor temperature is lower than 40 degree or is higher than 40 degree and certain switch when being in misoperation and threading off; Temperature signal that temperature sensor is gathered and switch input signal are after Single-chip Controlling; Send alerting signal through carrier signal to the operator on duty, the aging conditions of real time and on line monitoring electrical equipment.

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 electrical equipment of the utility model supervising device that wears out; Comprise temperature sensing circuit 1, electric switch trigger circuit 2, single chip machine controlling circuit 3, display circuit 4, heating wire driving circuit 5 and frequency-selecting amplifier circuit 7; The output terminal of said temperature sensing circuit 1 connect D the input end of data converting circuit 11; D the output terminal of data converting circuit 11 and electric switch trigger circuit 2 be connected to single chip machine controlling circuit 3; By single chip machine controlling circuit 3 output control linkage to display circuit 4, heating wire driving circuit 5 and phase lock circuitries 6, the output terminal of said phase lock circuitry 6 is connected to carrier signal decoding scheme 8 through frequency-selecting amplifier circuit 7.

Said temperature sensing circuit 1, is sent to AD623 operational amplifier IC3 and constitutes, to aging chamber environment collecting temperature signal and signal amplification circuit after the rectifying and wave-filtering signal Processing by the output signal of K type temperature sensor Q; When K type temperature sensor environment temperature that Q collects, Q produces faint d. c. voltage signal through K type temperature sensor, and this signal is through resistance R 1 current limliting; After capacitor C 1 filtering; Be input to the 3rd pin of AD623 operational amplifier IC3, through AD623 operational amplifier IC3 is inner amplify after, by the 6th pin output of AD623 operational amplifier IC3 through amplify d. c. voltage signal; This signal be input to D the 2nd pin of data-switching chip IC 2; By D the 5th, 6,7 pin and the 35th, 36,37 pin of single-chip microcomputer IC1 of data-switching chip IC 2 form datel circuit, through D after the data-switching chip IC 2 inner A/D data-switching, be input to single-chip microcomputer IC1 again; IC1 reads current data information by single-chip microcomputer; Single-chip microcomputer IC1 reads A1 point signal, through D data-switching chip IC 2 data converted when being lower than setting value 40 and spending, after single-chip microcomputer IC1 internal processes is judged; The 3rd, 4,5,6 pin by single-chip microcomputer IC1 the 3rd, 4,5,7 pin and LCD display chip IC4 are formed the indicated data communication circuit; Read the data message of LCD display chip IC2 through single-chip microcomputer IC1 after, send the driving data signal, IC4 shows current humidity value by the LCD display chip; The 27th pin output high level of another route single-chip microcomputer IC1 through resistance R 7 current limlitings, makes the controllable silicon SCR conducting, and heating wire gets the electrician and does, and makes indoor temperature continue to heat;

When single-chip microcomputer IC1 reads A1 point signal, through D data-switching chip IC 2 data converted be setting value 40 when spending, the 27th pin output low level by single-chip microcomputer IC1 is ended controllable silicon SCR, the heating wire dead electricity stops to heat, and reaches intelligent thermostatic control.

In the electrical equipment aging test process; During because of heating wire fault or grid power blackout; The aging test indoor temperature is reduced to 30 when spending always; Be judged as equipment failure or power failure through single-chip microcomputer IC1 internal processes, after single-chip microcomputer IC1 internal processes is judged, form phase lock circuitry 6 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 2C 3 by triode VT1, audio-frequency transformer (AFT) T constitute frequency-selecting amplifier circuit 7; The 23rd 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 2C4 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 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 VT2 conducting by its 8th pin output terminal output low level; LED is lighted; The carrier data signal of receiving extension set is described, is shown that current electrical equipment aging chamber has taken place to have a power failure or equipment failure, please in time overhaul.

Said electric switch trigger circuit 2 are made up of the output terminal connection resistance 3R1 of electric switch auxiliary contact T2; Can all the electrical equipment auxiliary contacts that need monitor be together in series; When electric switch auxiliary contact T2 is in closure; Supply voltage is low level state through the 39th pin I/O end that resistance 3R1 current limliting is input to single-chip microcomputer IC1, explains that electric switch is in normal monitor state.As because of the switch quality problems time, electric switch auxiliary contact T2 can be in disconnected off status, and the 39th pin I/O end of single-chip microcomputer IC1 is high level state; Single-chip microcomputer is judged through the IC1 internal processes, sends control signal, by the 23rd pin output high level signal of single-chip microcomputer 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 2C4 of audio-frequency transformer (AFT) T; Send data-signal to the carrier wave main frame; 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, by its 8th pin output terminal output low level; Make triode VT2 conducting; LED is lighted, and the carrier data signal of receiving extension set is described, shows that current electrical equipment 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 aging supervising device of electrical equipment; It is characterized in that: comprise temperature sensing circuit (1), electric switch trigger circuit (2), single chip machine controlling circuit (3), display circuit (4), heating wire driving circuit (5) and frequency-selecting amplifier circuit (7); The output terminal of said temperature sensing circuit (1) connect D the input end of data converting circuit (11); D the output terminal of data converting circuit (11) and electric switch trigger circuit (2) be connected to single chip machine controlling circuit (3); By single chip machine controlling circuit (3) output control linkage to display circuit (4), heating wire driving circuit (5) and phase lock circuitry (6), the output terminal of said phase lock circuitry (6) is connected to carrier signal decoding scheme (8) through frequency-selecting amplifier circuit (7).

2. the electrical equipment according to claim 1 supervising device that wears out is characterized in that: said temperature sensing circuit (1), is sent to AD623 operational amplifier IC3 and constitutes after the rectifying and wave-filtering signal Processing by the output signal of K type temperature sensor Q.

3. the electrical equipment according to claim 1 supervising device that wears out is characterized in that: said electric switch trigger circuit (2) connect resistance 3R1 by the output terminal of electric switch auxiliary contact T2 and constitute.

4. the electrical equipment according to claim 1 supervising device that wears out is characterized in that: said phase lock circuitry (6) is made up of LM567 tone decoder U1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof.

5. the electrical equipment according to claim 1 supervising device that wears out; It is characterized in that: said frequency-selecting amplifier circuit (7) is made up of elementary L1, electric capacity 2C2, the capacitor 2C3 of triode VT1, audio-frequency transformer (AFT) T, and sends data-signal through electric wire to carrier signal decoding scheme (8) through secondary L2, the electric capacity 2C4 of audio-frequency transformer (AFT) T.

6. according to claim 1 or the aging supervising device of 5 described electrical equipments, 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, the LED that connect successively.