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AC live induction device

A technology of sensing devices and circuits, applied in the field of electric testing, to achieve the effects of high sensitivity, easy portability, and fast alarm speed

Active Publication Date: 2019-01-08
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] An electroscope is an instrument for detecting whether an object is electrified and roughly estimating the amount of electrification. It is divided into a low-voltage electroscope and a high-voltage electroscope. It is used to test high-voltage electrical equipment with a voltage of more than 250V to the ground. In the prior art, high-voltage electroscopes can only perform live detection on equipment with nominal voltage levels, and different voltage levels require different electroscopes.

Method used

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  • AC live induction device
  • AC live induction device
  • AC live induction device

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0028] see Figure 1 to Figure 6 , an AC charged induction device, including a power supply circuit, a signal receiving circuit, a gear control circuit, a signal processing circuit, an MCU control circuit, an alarm circuit and an MCU input circuit, the power supply circuit is used to supply power to the entire device, and the MCU control circuit It is used to output the gear position control signal to the gear position control circuit, select the gear position, and store the gear position information; the gear position control circuit is electrically connected to the signal receiving circuit, and is used to control the sampling resistance connected to the signal processing circuit; The signal receiving circuit is used to detect the electrical signal, and transmits the detected electrical signal to the signal processing circuit; the signal processing circuit is used to receive the electrical signal detected by the signal receiving circuit, and transmits it to the MCU input circu...

specific Embodiment 2

[0034] see Figure 7 , a self-excited oscillation circuit is connected between the signal processing circuit and the MCU input circuit, the self-excited oscillation circuit is used to receive the electrical signal output by the signal processing circuit, oscillate, and output a pulse signal to the MCU input circuit to control its first A transistor Q1 is turned on. The MCU input circuit is used to receive the pulse signal output by the self-excited oscillation circuit, and output the level signal to the MCU control circuit, and the MCU control circuit is used to receive the level signal output by the MCU input circuit, and according to the level signal and The gear position information corresponding to the level signal analyzes the voltage level of the detected electrical signal, and controls the alarm circuit to give an alarm. The signal processing circuit includes an amplifying circuit and a frequency selection circuit, the amplifying circuit includes a first operational am...

specific Embodiment 3

[0035] see Figure 8 , the AC charged induction device also includes a buzzer, one end of the buzzer is connected to the emitter of the first triode Q1, the collector of the first triode Q1 is connected to one end of the power supply, and the buzzer Connect the other end of the buzzer to the other end of the power supply. Other features are the same as in Example 2.

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Abstract

The invention relates to an AC charged induction device, which comprises a power circuit, a signal receiving circuit, a gear control circuit, a signal processing circuit, an MCU control circuit, an alarming circuit and an MCU input circuit, wherein the MCU control circuit outputs a gear control signal to the gear control circuit for gear selection; the gear control circuit is electrically connected with the signal receiving circuit for controlling a sampling resistor accessed to the signal processing circuit; the signal receiving circuit detects electric signals, and the detected electric signals are transmitted to the signal processing circuit; the signal processing circuit receives the electric signals detected by the signal receiving circuit, the electric signals are amplified and filtered and then transmitted to the MCU input circuit, conduction of a triode is controlled, signals are outputted to the MCU control circuit, the MCU control circuit is used for receiving signals of the MCU input circuit, analyzing the voltage grade of the detected electric signals and controlling the alarming circuit to give an alarm. While whether the device is charged is detected, the voltage grade of the device can be detected.

Description

technical field [0001] The invention relates to the field of electrometry, in particular to an AC electrification induction device. Background technique [0002] In recent years, with the development of my country's economy, the modernization of the power industry, which is the lifeblood of the national economy, has shown increasing importance. People's demand for and dependence on electricity is increasing day by day, and ensuring the safe and reliable operation of the power supply system has become the primary task of the power management department. [0003] An electroscope is an instrument for detecting whether an object is electrified and roughly estimating the amount of electrification. It is divided into a low-voltage electroscope and a high-voltage electroscope. It is used to test high-voltage electrical equipment with a ground voltage above 250V. In the prior art, high-voltage electroscopes can only perform live detection on equipment with nominal voltage levels, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/145G01R15/08
CPCG01R15/08G01R19/145
Inventor 青志明敬勇章陈勇吴彬傅望周飞常仕亮乐宗明康成林刘克恒张宏艳
Owner STATE GRID CORP OF CHINA
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