KR19980060445U - High pressure detector - Google Patents

Abstract

The present invention relates to a high voltage detector, in a high pressure detector for measuring a high pressure, the detection electrode 10 for detecting a magnetic field formed at a predetermined distance from a line or a terminal formed with a voltage higher than the high voltage, and used according to the level of the voltage to be detected The detection level adjusting unit 100 for adjusting the range, the detection amplifier 200 for amplifying a signal of the detected voltage component to a predetermined magnitude, and the signal amplified by the signal detected by the detection amplifier 200 are adjusted. An oscillator 300 for oscillating, a voice generator 600 for generating a voice signal embedded as a signal amplified by the detection amplifier 200, the detection level adjusting unit 100, and a detection amplifier 200. And an operation unit 500 for manipulating or controlling an operation of the voice generator 600 and a sound generator for generating a predetermined sound signal using the frequency oscillated by the oscillator 300 and the input signal of the voice generator 600. 400, and the rash The ring counter 700 generates a sequential signal by taking only one stable element among two stable elements by the frequency oscillated at 300, and occurs in the voice generator 600 and the acoustic generator 400. It consists of a speaker 800 that amplifies the audio and sound signals to an audible frequency of a predetermined size and outputs them to the outside to generate sound, sound, or light when detecting a voltage from a certain distance of a line or terminal having a high voltage of a predetermined size. It is to let.

Description

High pressure detector

The present invention relates to a device for detecting a high voltage, and more particularly to a high voltage detector for generating a voice, sound or light when detecting a voltage from a certain distance of a line or a terminal having a high voltage of a predetermined size.

As a category for the nominal voltage of a conventional power system, it is classified into three categories, which are specified in the system voltage classification. In other words, low voltage is 750V or less for DC, 600V or less for AC, high voltage is 750V for DC, AC is more than 600V and 7,000V or less, and special high voltage exceeds 7,000V. Say. At this time, the AC value is an effective value.

As described above, there have been many problems in measuring voltage values of high or special high voltages in general DC or AC voltages. That is, the voltage or higher voltage is limited to the equipment or apparatus capable of measuring this, and due to the nature of the high pressure it is almost impossible to measure by directly contacting the measuring device to one end of the line or terminal. Therefore, in order to measure this, the measurement is performed at a certain distance from the line or the terminal. In this case, the magnetic field of a predetermined magnitude is generated around the line or the terminal according to the flow of current. By measuring the magnetic field thus formed, the measured magnetic field was converted into a voltage value to find the voltage value. As such, the high or special high voltage was found by inferring or measuring the voltage value only by using a measuring instrument called a high pressure detector or by numerical calculation.

However, when a voltage is detected by a high voltage detector using a conventional high voltage detector, an abnormality is generated due to the high voltage to be measured by the high voltage detector, the state being measured, or the measurement is not performed correctly. The terminal had a problem that the measurement error of high voltage or special high voltage was large.

In order to solve the above problems of the present invention, a high-pressure detector that informs the measurement state by a voice or a sound or visual indication after measuring or when measuring the voltage of a line or terminal on which a voltage of a high voltage or more is formed The purpose is to provide.

1 is a schematic configuration diagram of a high pressure detector according to the present invention,

2 is a block diagram of a high pressure detector according to the present invention,

3 is a circuit diagram of a high voltage detector according to the present invention.

* Description of the symbols for the main parts of the drawings *

10 detection electrode 12 rotary switch

14 Cap 16: Printed Circuit Board

18: battery 20: main body

22: amplifier 24, D1-D7: light emitting diode

26 pipe 100 detection level adjusting unit

200: detection amplification unit 300: oscillation unit

400: sound generating unit 500: operation unit

600: voice generator 700: ring counter

800: speaker IC1, IC2, IC3, IC4: integrated circuit

R1-R15: Resistor C1-C7: Condenser

ZD1: Zener Diode T1: Transformer

RL1: Relay Q1-Q4: Transistor

TH: Thermister NL1: Neon lamp

The present invention, in order to achieve the above object, in the high pressure detector for measuring high pressure, the detection electrode for detecting a magnetic field formed at a certain distance from a line or a terminal formed with a voltage higher than the high voltage, and the use range according to the level of the voltage to be detected A detection level adjusting unit for adjusting a signal, a detection amplifier section for amplifying a signal of the detected voltage component to a predetermined magnitude, an oscillator section for oscillating a predetermined frequency by the signal amplified by the detection amplifier section, and in the detection amplifier section. A voice generator for generating a built-in voice signal as an amplified signal, an operation unit for operating or controlling the operation of the detection level adjusting unit, the detection amplifier unit, and the voice generator, an input signal of the frequency generated by the oscillator and the voice generator Among the two stable elements by an acoustic generator for generating a predetermined acoustic signal and a frequency oscillated by the oscillator A high voltage composed of a ring counter that generates a sequential signal by taking only one designated stable element, and a speaker that amplifies a sound or sound signal generated by the sound generator or sound generator to an audible frequency of a predetermined size and outputs it to the outside. By providing a detector.

Hereinafter, a high pressure detector according to the present invention will be described based on the accompanying drawings.

1 is a schematic configuration diagram of a high pressure detector according to the present invention.

The detection electrode 10 senses a magnetic field formed at a predetermined distance from a line or a terminal on which a voltage of at least a high voltage is formed, and generates a voltage of a predetermined size by the induced magnetic field. That is, the voltage is proportionally generated according to the magnitude of the induced electric field. The detection electrode 10 is configured at the tip of the device so that the voltage can be measured from a certain distance of a line or terminal where high pressure or special high pressure is generated so that the measurer is not damaged by a magnetic field generated at high or special high pressure. It is.

The rotary switch 12 is connected to the next of the detection electrode 10 to set the voltage range to be measured. The rotary switch 12 has a low contact point (L), a high contact point (H), a test contact point (T), and The off-contact point (OFF) etc. is comprised, The use range can measure 3KV-35KV or more with respect to the voltage of a line, for example. In detail, the rotary switch 12 can measure from 3KV to 20KV at the low contact point L, and can measure from 20KV to 35KV at the high contact point H. The test contact (T) is for self-inspection before using the device. It can check the voltage status of the battery or abnormality of the device. The OFF contact is a contact maintained by grounding the battery to prevent unauthorized discharge of the device when the device is not in use.

The cap 14 connects or separates the detection electrode 10 from the main body 20 of the device. A high insulator is used. Of course, a high insulator is used to prevent the device from malfunctioning of the printed circuit board on which the electric and electronic components are mounted inside by the strong magnetic field. Inside the main body 20, a battery for supplying driving power on the printed circuit board 16 is configured, and a rechargeable battery or a replaceable battery is used as the battery. In addition to the battery can be configured to use a separate external power supply. The printed circuit board 16 also includes various electrical and electronic components, including the amplifier 22. One end of the main body 20 is configured with a light emitting diode 24 for visual display so that the operating state can be easily recognized when the apparatus is used. The rear of the high-voltage detector was connected to a high-insulation synthetic resin to provide convenience.

FIG. 2 is a block diagram of the high pressure detector, and FIG. 3 is a detailed circuit diagram of the high pressure detector.

The detection level adjusting unit 100 adjusts the use range according to the level of the voltage to be detected, and the detection level adjusting unit 100 controls the current applied to the high contact point H and the low contact point L of the rotary switch 12. Variable resistors VR1 and VR2 for adjusting the size and resistors R12 and R13 connected to the variable resistors VR1 and VR2, respectively.

The detection amplifier 200 amplifies the signal of the detected voltage component to a predetermined magnitude, and the detection amplifier 200 has a predetermined resistance to prevent the voltage induced from the detection electrode 10 from flowing into the direct circuit. A resistor R14 having a value and a neon lamp NL1 connected in parallel with the resistor R14 to discharge voltage when a transient voltage is applied from the detection electrode 10 to prevent unnecessary potential rise; (R14) is connected between the third and fourth transistors (Q3, Q4) and the third and fourth transistors (Q3, Q4) for multistage amplifying the voltage applied to the base end to the ambient temperature of the device Therefore, a demister (TH) is included to limit the operation.

The oscillator 300 oscillates a predetermined frequency by the signal amplified by the detection amplifier 200. The oscillator 300 includes a second integrated circuit IC2 used for oscillation, a plurality of resistors R3 and R4, and a capacitor. And (C3-C6). The oscillator 300 oscillates a frequency having a predetermined period by the second integrated circuit IC2, the plurality of resistors R3 and R4, and the capacitors C3-C6.

The voice generator 600 generates a voice signal embedded as a signal amplified by the detection amplifier 200, and the voice generator 600 includes a test contact T of the rotary switch 12 at an input terminal, A first integrated circuit IC1 which is set when the low contact point L or the high contact point H is connected and outputs a built-in voice signal when a corresponding signal is input, and a voice signal from the first integrated circuit IC1; Each time is outputted, a first light emitting diode D1 that visually displays an output state is included, and resistors R1 and R2 and capacitors C1 to C3 are connected to the first integrated circuit IC1.

The operation unit 500 manipulates or controls operations of the detection level adjusting unit 100, the detection amplifier 200, and the voice generator 600, and the operation unit 500 amplifies the voltage amplified by the detection amplifier 200. An integration capacitor C9 for stabilizing the signal level does not change, and a relay RL1 connected in parallel with the integration capacitor C9 to interrupt the applied voltage. The relay RL1 is composed of a coil L1 and an intermittent switch SW1.

The sound generator 400 generates a predetermined sound signal using the frequency oscillated by the oscillator 300 and the input signal of the voice generator 600, and the voice generator 400 generates a predetermined frequency. A signal connected to a third integrated circuit IC3 and the third integrated circuit IC3, a signal input from the voice generator 600 is connected to a base end, and a collector end is connected to the oscillator 300 to be input. Includes first and second transistors Q1 and Q2 for multistage amplification to a predetermined size, and a plurality of resistors R5-R10 and capacitors C7 are connected to the transistors Q1 and Q2.

The sound generating unit 600 is connected to the primary side, the sound generating unit 400 is connected to the secondary side, the tertiary side is composed of a transformer (T1) connected to the speaker 800, respectively, the oscillator 300 And a zener diode ZD1 connected between the speaker 800 and the speaker 800 to remove the surge voltage embedded in the induced voltage.

The ring counter 700 generates a sequential signal by taking only one stable element among two stable elements by the frequency oscillated by the oscillator 300, and generates a specified clock signal in the ring counter 700. And a plurality of light emitting diodes D2-D7 connected to the fourth integrated circuit IC4 and sequentially blinking.

The speaker 800 amplifies the voice and sound signals generated by the voice generator 600 and the sound generator 400 to an audible frequency of a predetermined size and outputs them to the outside.

When explaining the operation of the high-voltage detector of the present invention configured in this way in detail, first to determine the state of the built-in battery before the use of the high-voltage detector, if the rotary switch 12 to the test contact (T), for example, The test is completed. The voice is output through the speaker 800, and light of a predetermined wavelength is output from the first light emitting diode D1. At this time, since the battery is discharged when the voice is low or the light is darker than the reference value, the battery should be replaced or charged. In addition, there is a risk of high-voltage electric shock during the test, so always use the tester with the detector.

Thus, before using the high-voltage detector, the rotorless tip 12 is placed at the test contact (T) to check the voice and light, and then determine a suitable range for the voltage to be examined. That is, when the voltage to be measured is a low voltage, the rotary switch 12 is switched to the low contact point L, and when the voltage is higher than the high voltage, the high contact point H is switched.

A high voltage detector is a device required to manage or work with a special high voltage transmission line.The principle of operation is to convert a magnetic field generated from a high voltage line into a voltage and amplify the converted voltage to a certain size. The built-in voice generator 600 and the sound generator 400 and the ring counter 700, the sound generated by the sound, sound and light are to be examined. That is, before the examination, for example, a voice of paying attention to high pressure is output during the measurement, and then a sound, for example, beep, beep, beep, ..., which is a sound interrupted at a predetermined cycle is generated. In other words, when the detector brings the detection electrode 10 to a special high voltage line within a certain distance, a magnetic field is formed by the high pressure flowing in the line, and a voltage is induced by the corresponding magnetic field.

The induced voltage is applied to the base terminal of the third transistor Q3 after the current value is lowered through the resistor R14 of a predetermined size or more at the tip of the detection level adjusting unit 100 in case the magnitude is larger than the reference value. Let it be. In addition, when the overvoltage is applied by connecting the neon lamp NL1 in parallel with the resistor R14, the overvoltage is lowered by emitting light through the neon lamp NL1. This is to enable a stable amplification in the detection amplifier 200. The third transistor Q3 is turned on and outputs the amplified signal to the emitter terminal by the driving power source B + applied through the operation unit 500 connected to the collector terminal with the voltage applied to the base terminal of the third transistor Q3. . The signal amplified by the emitter terminal of the third transistor Q3 is applied to the base terminal of the fourth transistor Q4 and amplified again. At this time, the thermistor TH connected in parallel to the emitter terminal of the third transistor Q3 and the base terminal of the fourth transistor Q4 detects a temperature in the device and when the temperature is above or below the reference value, the third transistor Q3. Bypass the current output to the emitter stage of the instrument to stop the operation of the instrument.

The light emitting diodes D1 and D2-D7 operate simultaneously with the voice or sound generated during or before the detector is activated to visually indicate the operation status. In particular, since the light emitting diodes (D2-D7) connected to the ring counter 700 are sequentially operated, when the light emitting diodes (D2-D7) are connected in an annular shape, the emitted light appears to rotate, so that a more effective expression is achieved. You can do it.

When the rotary switch 12 is switched to the test contact point (T), the test is completed and an intermittent sound and light are generated. When the rotary switch 12 is switched to the high contact point (H) and the low contact point (L), Pay attention to the sound of intermittent sound and light. When a voltage is detected through the detection electrode 10, a voice of Pay attention to the high voltage is generated during the measurement, and a voice of Pay attention to the high voltage when the detected induction voltage disappears continues to be generated.

In addition, when the voltage detected by the detection amplifier 200 is amplified and introduced, the driving power is supplied through the interrupt switch SW1 by driving the coil L1 and the interrupt switch SW1 of the relay RL1 of the operation unit 500. (B +) is applied to drive the sound generator 400, the voice generator 600, the oscillator 300 and the respective amplification means. This is to prevent unnecessary power consumption.

When the driving power source B + is applied, the frequency oscillated by the oscillator 300 triggers the first integrated circuit IC1 of the voice generator 600, and voice is generated by the first integrated circuit IC1. In this case, a signal is applied to the oscillator 300 so that amplification of the oscillation sound is suppressed so that only the audio signal is output without generating the oscillation sound. When the output of the audio signal is completed, the suppression signal of the oscillator 300 is released and the oscillation sound interrupted is continuously generated. At the same time, the pulse signal of the appropriate period of the oscillator 300 is applied to the fourth integrated circuit IC4 of the ring counter 700 to sequentially apply the plurality of light emitting diodes D2-D7 through the fourth integrated circuit IC4. Lights up. At this time, since the voice signal and the oscillation sound have separate impedances, impedances are matched using the transformer T1. That is, the primary side and the secondary side of the transporter T1 are input, and the tertiary side outputs voice and sound through the speaker 800. Converting the oscillation sound of the oscillator 300 to intermittent sound generates an oscillation sound of about 1K, and the oscillation pulse output from the output terminal of the third integrated circuit IC3 generates an oscillation sound applied to the base of the first transistor Q1. The beeper is interrupted at 0.5 Hz intervals.

When the first integrated circuit IC1 for voice is triggered, a signal amplified by the detection amplifier 200 operates the relay RL1, and the driving power B + applied through the relay RL1 is a rotary switch. It is connected to the off contact (OFF) of (12) by the contact of the rotary switch 12 to separate the test contact (T), low contact (L) and high contact (H), respectively, to trigger. The operation of the test contact T of the rotary switch 12 is similar to that of a voltage in a high voltage line at the sensitivity adjustment high contact H of the detection electrode 10 before actually using the high voltage detector. Check the certainty of operation using the contact point of 12).

In this way, if the normal operation is made at the test contact (T), there is no problem in the circuit of the high-voltage detector is a proof that can be a normal examination. Applying the driving power source B + to the high contact point H has a lot of resistance on the detection electrode 10 side. Therefore, the battery is in an inadequate state, so the high contact point H can be selected to apply a voltage to perform an overall operation test. . Sensitivity adjustment at the low contact point L and the high contact point H is performed by flowing the voltage induced by the detection electrode 10 to a negative value G so that the third and fourth transistors Q3 and Q4 of the detection amplifier 200 are applied. The amplification degree is adjusted by adjusting the amount input to.

In this case, since the voltage induced in the detection electrode 10 is very large, the weakened current is made by passing through the resistor R14, so that the first variable resistor VR1 and the second variable resistor VR2 can be adjusted.

As described above, the high pressure detector of the present invention generates voice, sound, and light when detecting voltage in a cable line or a terminal to identify a check state or active state of the high voltage detector, and uses a rotary switch before using the detector. You can check the operation status of the detector through the test contact of the tester, and you can prevent safety accidents due to the caution voice during the checkup, and by separating the use range into the high contact point and the low contact point, It can be checked by the effect of increasing the convenience in the use of a high-pressure detector.

Claims (3)

In the high pressure detector for measuring high pressure, A detection electrode for sensing a magnetic field formed at a predetermined distance from a line or a terminal on which a voltage of a high voltage or more is formed; A detection level adjusting unit connected to a high contact point and a low contact point of the rotary switch, respectively, to adjust a range of use according to the level of the voltage to be detected; A resistance for preventing a voltage induced from the detection electrode from being introduced into the direct circuit; A neon lamp connected in parallel with the resistor and discharging the voltage when a transient voltage is applied from the detection electrode to prevent unnecessary potential rise; Third and fourth transistors in which the resistor is connected to a base terminal and multiplies an applied voltage; A detection amplifier configured to be connected between the third and fourth transistors to limit the operation according to the ambient temperature of the device to amplify a signal of the detected voltage component to a predetermined magnitude; An oscillator for oscillating a predetermined frequency by the signal amplified by the detection amplifier; A first integrated circuit connected to a test contact, a low contact, or a high contact of a rotary switch connected to an input terminal and configured to output a built-in audio signal when a corresponding signal is input; A voice generator configured to generate a voice signal embedded with a signal amplified by the detection amplifier, the first light emitting diode being configured to visually display an output state each time a voice signal is output from the first integrated circuit; An integrating capacitor for stabilizing the level of the voltage signal amplified by the detection amplifier so as not to change; A control unit connected to the integrating capacitor in parallel and configured to control an applied voltage so as to operate or control an operation of a detection level adjusting unit, a detection amplifier unit, and a voice generation unit; A third integrated circuit for generating a predetermined frequency; A first transistor and a second transistor configured to be connected to the third integrated circuit, a signal input from a voice generator is connected to a base end, and a collector end is connected to an oscillator to multi-amplify the input signal to a predetermined size. A sound generator for generating a predetermined sound signal from the frequency oscillated by the oscillator and an input signal of the voice generator; A fourth integrated circuit which generates one designated clock signal; A ring counter connected to the fourth integrated circuit and configured to sequentially blink a plurality of light emitting diodes to generate a sequential signal by taking only one of the two stable elements specified by the oscillation frequency of the oscillation unit; A speaker for amplifying the voice and sound signals generated by the voice generator and the sound generator to an audible frequency of a predetermined size and outputting them to the outside; And a rotary switch comprising a high contact point, a low contact point, a test contact point, and an off contact point for maintaining a check range of the voltage used between the detection electrode and the detection level adjusting unit, or the device itself. High pressure detector. The high voltage detector according to claim 1, wherein a zener diode is connected between the oscillator and the speaker to remove a surge voltage embedded in the induced voltage. The high voltage detector of claim 1, wherein the voice generator is connected to the primary side, the sound generator is connected to the secondary side, and a transformer is connected to the tertiary side, respectively.