CN1352396A - Insualtor detector and using method - Google Patents

Abstract

The present invention is an instrument for detecting the damage and aging degree of insulator and its usage. The present invention collects the high-voltage across the insulator to be detected; processes the voltage through voltage division, rectification, filtering, linear compensation, conversino to frequency, laser emission to receiver, shaping into square wave, counting in executor circuit, calculation and comparison based on software program; and displays in display circuit and sounds via its buzzer circuit. The present invention can determine the quality, aging degree and damage degree accurately with safe data transmission and without influence of environmental factors.

Description

Insualtor detector and using method

The present invention relates to a kind of detecting instrument or equipment, particularly a kind of insualtor detector.

Before the present invention makes, when needs detect porcelain insulator on the power circuit is whether porcelain vase punctures or leak electricity, normally a short circuit iron wire is tied up front end at link rod, go to contact the two ends of porcelain vase again with the short circuit iron wire, induced voltage on the porcelain vase is carried out short circuit, the electric spark that utilizes transcient short circuit time to produce judges by naked eyes whether porcelain vase punctures or leak electricity, i.e. the quality of porcelain vase.This method of testing exists the quality that can only qualitatively judge porcelain vase, can not quantitatively judge the degree of aging of porcelain vase; Simultaneously, in the sun with noisy environment under, electric spark and sound that short circuit produces are difficult to clearly see and clearly hear, very easily cause erroneous judgement, get the wrong sow by the ear; In addition, from the quality that electric spark that short circuit produced and sound are judged porcelain vase, be by rule of thumb and sensation purely, lack the preciseness of science, very easily the accuracy judged of influence; And, in a string porcelain vase, have one breakdown, the induced voltage on will the make whole string porcelain vase rises, damaged if any a porcelain vase but be also not breakdown this moment, then will be difficult to be found.

Purpose of the present invention will overcome above-mentioned defective exactly, designs a kind of new device or instrument and comes insulator is the quality of porcelain vase and damages degree of aging and detect.

Technical scheme of the present invention is: the output of insulator two ends is connected to binding post, its major technique feature is the bleeder circuit that binding post is connected to emitter, emitter is made of binding post, bleeder circuit, current rectifying and wave filtering circuit, linear compensation circuit, V-F circuit, radiating circuit, bleeder circuit connects current rectifying and wave filtering circuit, current rectifying and wave filtering circuit is connected to linear compensation circuit, linear compensation circuit is connected to the input end of V-F circuit, and the output terminal of V-F circuit connects radiating circuit.

Its major technique is characterised in that signal that emitter is sent is received by the receiving circuit of receiving trap, receiving trap is made of receiving circuit, reset circuit, interrupt circuit, display circuit, executive circuit, buzzing circuit, receiving circuit, reset circuit, interrupt circuit are connected to the input end of executive circuit respectively, and executive circuit exports display circuit, buzzing circuit respectively to.

The major technique feature that the present invention uses:

(1) metallic tines is connected on the binding post of emitter, and emitter, receiving trap are installed in the upper and lower end of expansion link respectively;

(2) emitter is transmitted into the signal that records the receiving circuit of receiving trap;

(3) receiving circuit is handled the signal that receives by software program;

(4) receiving circuit shows result and reports to the police.

Advantage of the present invention and effect are scientific strong, and data transmit safety, and the judgment accuracy height is easy to operate, can not only qualitatively judge the good with bad of porcelain vase, and can quantitatively judge the aging and damaged condition of porcelain vase.All these are not influenced by environment, human factor, but repeated measurement.

Accompanying drawing:

Fig. 1-emitter circuit of the present invention.

Fig. 2-receiving trap circuit of the present invention.

Fig. 3-user mode schematic appearance of the present invention.

The software program first that Fig. 4-receiving trap of the present invention is carried out.

The software program third part that Fig. 5-receiving trap of the present invention is carried out.

The second portion of Fig. 6-software program that receiving trap of the present invention is carried out.

Embodiment:

As shown in Figure 1: binding post A, the B output of emitter 14 is connected to bleeder circuit 1, and bleeder circuit 1 is made up of divider resistance 1-1,1-2,1-3; Bleeder circuit 1 two ends are connected to current rectifying and wave filtering circuit 2 again, and current rectifying and wave filtering circuit 2 is made up of rectifier bridge heap 2-1 and electric capacity 2-2; Current rectifying and wave filtering circuit 2 exports linear compensation circuit 3 to, and linear compensation circuit 3 is made up of compensating resistance 3-1 and filter capacitor 3-2; Linear compensation circuit 3 exports the input end 4-7 of V-F circuit 4 to, and V-F circuit 4 is the voltage-frequency circuit, and what adopt in this example is LM331 voltage-frequency conversion special IC; The output terminal 4-3 of V-F circuit 4 exports radiating circuit 5 to, and radiating circuit 5 is made up of transistor 5-1 and laser diode 5-2, in the laser diode 5-2 current-limiting resistance is arranged.

During work, as Fig. 1, shown in Figure 3: metallic tines 13 1 ends of two detection usefulness are connected with binding post A, the B on the emitter 14, the other end is the two ends of contact measured porcelain vase respectively, the induction high pressure at porcelain vase two ends is incorporated into the bleeder circuit 1 of emitter by binding post A, B, be formed into the low pressure of direct ratio at divider resistance 1-2 two ends, this low pressure forms the direct current effective voltage that is directly proportional with the induction high pressure through the rectifier bridge heap 2-1 of current rectifying and wave filtering circuit 2 and the rectifying and wave-filtering of electric capacity 2-2; At this moment, can converse the size of induction high pressure by the direct current effective voltage at electric capacity 2-2 two ends; The direct current effective voltage outputs to linear compensation circuit 3 behind the rectifying and wave-filtering, exports the input end 4-7 of V-F circuit 4 after the compensation through compensating resistance 3-1 and filter capacitor 3-2 to, and V-F circuit 4 has comprised disclosed relevant auxiliary circuit element on LM331 and the handbook; The pulse signal that the output terminal 4-3 of V-F circuit 4 will be directly proportional with input voltage is about to voltage transitions and becomes frequency, exports the base stage of the transistor 5-1 of radiating circuit 5 to, by transistor 5-1 driving laser diode 5-2 to receiving trap emission pulse laser signal.

When V-F circuit 4 no-voltages are imported, failure of oscillation, output terminal 4-3 is high level, and the transistor 5-1 of radiating circuit 5 ends, and laser diode 5-2 does not work.

As shown in Figure 2: the receiving circuit 6 of receiving trap 15 is formed by receiving resistance 6-1, photosensitive tube 6-2 and schmitt inverter 6-3 (model is 74HC14); Its output terminal directly exports the T0 end of executive circuit 7 to, and executive circuit 7 is IC2AT89C52, by the monolithic integrated optical circuit of atmel corp's production; The output of the P2.7 of executive circuit 7 end is connected to buzzing circuit 8, and 8 in buzzing circuit is made up of trigger 8-1 and buzzer 8-2; The P1.0 to P1.7 of executive circuit 7 is connected to the data line interface DB0 to DB7 of display circuit 9, and display circuit 9 is MSCG12232, two row, every row 7 Chinese characters; The RST termination reset circuit 10 of executive circuit 9, reset circuit 10 is made up of reset button 10-1, reset resistor 10-2,10-3 and reset capacitance 10-4; Pin INT0, the INT1 of executive circuit 7 is connected also ground connection with the interruption button 11-1 of interrupt circuit 11, middle resistance break 11-2 with interruption button 11-3, middle resistance break 11-4 respectively; The leads ends XTAL2 of executive circuit 7, XTAL1 connect clock circuit 12, and clock circuit 12 is made up of crystal 12-1, electric capacity 12-2 and 12-3.

During work, as shown in Figure 2: the photosensitive tube 6-2 of the receiving circuit 6 of receiving trap 15 is not when receiving the pulsed laser signal of emitter emission, and its resistance is 1M-10M, and its negative terminal is a high level; When it receives pulsed laser signal, resistance reduces, its negative terminal voltage descends, because pulsed laser signal is the pulse signal that is proportional to detected voltage, what its negative terminal obtained thus is an anti-phase pulse signal, this signal obtains square-wave signal through Schmidt trigger 6-3 shaping, the T0 end that directly is added to executive circuit 7 is counted, and convert by executive circuit 7 software programs and to obtain the pairing magnitude of voltage of measured signal, just can know that this porcelain vase is bad, and this porcelain vase is aging or the degree of damage, so that in time change, avoids having an accident; Software program all is stored among the FLASH.ROM of executive circuit 7 inside, and the pin EA of executive circuit 7 connects noble potential, makes executive circuit 7 only use internal storage; The content that executive circuit 7 will be counted and calculate outputs in the display circuit 9 and shows, makes the staff clearly take leave the result; Executive circuit 7 amplifies the result simultaneously by the trigger 8-1 of buzzing circuit 8, promote buzzer 8-2 and sound, and tells the staff, so that in time take measures; When power connection moment, the charging current of the reset capacitance 10-4 of reset circuit 10 makes the RST end of executive circuit 7 keep the high level of short time, guarantees the proper reset of executive circuit 7, when needing hand-reset, only need contact reset button 10-1 gently and get final product; When interruption button 11-1 that presses interrupt circuit 11 or interruption button 11-3, the pin of the corresponding executive circuit 7 of its connection is a low level, triggers executive circuit 7 interrupt routines, carries out other corresponding operations, and concrete content is determined by software program.

As Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6: emitter 14, receiving trap 15 are installed in the upper and lower end of expansion link 16 respectively, and expansion link 16 is made by nonmetallic materials, and an end of metallic tines 13 is connected on binding post A, the B of emitter 14; When needing test, hand is lifted expansion link 16, and the metallic tines 13 of upper end is gone to connect insulator porcelain vase two ends, the signal that records is converted to laser pulse signal through dividing potential drop, rectifying and wave-filtering, linear compensation, the voltage-frequency of emitter 14 launches; And after receiving circuit 6 receptions of receiving trap 15, handle by the software program that the executive circuit in the receiving trap 15 7 is deposited: at first, by the type selecting button, as Fig. 4 software program first, this is in advance with regard in the Input Software program, as 5 kilovolts, 10,000 volts, 5 Wan Fu etc. according to the numerical value of the high pressure of required test; Then, by the chip select button, the sheet number decides according to model number, and promptly the number of sheet number is corresponding with the high pressure numerical value of model, is to be input in advance in the software program, software program for execution second portion such as Fig. 6; After determining model, sheet number, carry out software program third part, the exemplary voltages numerical value of promptly from software program, tabling look-up and obtaining setting as Fig. 5; The measuring-signal frequency, conversion obtains its mensuration voltage, will measure voltage and setting voltage value compares, and shows measured value simultaneously, calculate whether half of overgauge value of measured value again, as greater than, then sound, light are reported to the police, so that in time change or maintenance, as less than, then carrying out selecting to read of next model, sheet number, repeat a step, is porcelain vase until test all insulators that finishes.

Claims (3)

1. insualtor detector, the output of insulator two ends is connected to the binding post of emitter, it is characterized in that binding post is connected to bleeder circuit, emitter is made of binding post, bleeder circuit, current rectifying and wave filtering circuit, linear compensation circuit, V-F circuit, radiating circuit, bleeder circuit connects current rectifying and wave filtering circuit, current rectifying and wave filtering circuit is connected to linear compensation circuit, and linear compensation circuit is connected to the input end of V-F circuit, and the output terminal of V-F circuit connects radiating circuit.

2. insualtor detector, it is characterized in that signal that emitter is sent is received by the receiving circuit of receiving trap, receiving trap is made of receiving circuit, reset circuit, interrupt circuit, display circuit, executive circuit, buzzer, receiving circuit, reset circuit, interrupt circuit are connected to the input end of executive circuit respectively, and executive circuit exports display circuit, buzzing circuit respectively to.

3. insualtor detector using method is characterized in that:

(1) metallic tines is connected on the binding post of emitter, and emitter, receiving trap are installed in the upper and lower end of expansion link respectively;

(2) emitter is transmitted into the signal that records the receiving circuit of receiving trap;

(3) receiving circuit is handled the signal that receives by software program;

(4) receiving circuit shows result and reports to the police.

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