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Safety alarm for electrified parts of substation

A safety warning and alarm technology, which is applied in the direction of alarms, measuring current/voltage, and instruments that rely on interference with short-wavelength radiation, and can solve the problem of substation guardians or construction personnel who cannot intuitively obtain the safe distance of live equipment and safety accidents and other issues, to achieve the effect of wireless connection, convenient hanging, avoiding electric shock accidents, and reasonable matching

Inactive Publication Date: 2014-12-10
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that substation monitoring personnel or construction personnel cannot intuitively obtain the safe distance from live equipment, which may easily cause safety accidents, and provides a safety warning alarm for live parts in substations

Method used

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  • Safety alarm for electrified parts of substation
  • Safety alarm for electrified parts of substation

Examples

Experimental program
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specific Embodiment approach 1

[0017] Specific implementation mode one: the following combination figure 1 Describe this embodiment mode, the substation described in this embodiment mode uses the safety warning alarm of live part, and described alarm device is arranged on the live equipment, and it comprises infrared sensor IC1, and it also comprises signal amplifying circuit 1, voltage comparator 2, alarm delay Timing circuit 3 and audio alarm circuit 4,

[0018] Infrared sensor IC1 is used to collect human body infrared signals within the preset safety threshold, the electrical signal output terminal of infrared sensor IC1 is connected to the electrical signal input terminal of signal amplifying circuit 1, and the amplified signal output terminal of signal amplifying circuit 1 is connected to voltage comparator 2 The voltage comparison signal input end of the voltage comparator 2, the voltage comparison signal output end of the voltage comparator 2 is connected to the delay signal input end of the alarm d...

specific Embodiment approach 2

[0019] Specific implementation mode two: the following combination figure 1 and figure 2 Describe this embodiment, this embodiment will further describe the first embodiment, this embodiment also includes a voltage conversion circuit 5 and a power supply circuit 6,

[0020] The power supply circuit 6 is used to convert the power frequency 220V power supply into a DC 12V voltage output. After the DC 12V voltage is converted into a DC 6V voltage by the voltage conversion circuit 5, it becomes an infrared sensor IC1, a signal amplifier circuit 1, a voltage comparator 2, and an alarm delay. Time circuit 3 and audio alarm circuit 4 provide working power.

specific Embodiment approach 3

[0021] Specific implementation mode three: the following combination figure 1 and figure 2 Describe this embodiment, this embodiment will further explain Embodiment 2, the signal amplifying circuit 1 of this embodiment is composed of electrolytic capacitor C1, electrolytic capacitor C2, electrolytic capacitor C3, capacitor C4, electrolytic capacitor C5, resistor R1, resistor R2, Resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, NPN transistor VT1 and operational amplifier IC2; voltage comparator 2 consists of resistor R9, resistor R10, resistor R11, variable resistor R12, diode VD1 and Operational amplifier IC3 is composed; alarm delay circuit 3 is composed of resistor R13, resistor R14, resistor R15, resistor R16, diode VD2, electrolytic capacitor C6 and operational amplifier IC4; audio alarm circuit 4 is composed of resistor R17, resistor R18, resistor R19, resistor R20, diode VD3, diode VD4, NPN transistor VT2, NPN transistor VT3, electrolytic ...

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Abstract

The invention relates to a safety alarm for electrified parts of a substation, belongs to the technical field of warning for electrified devices of substations and aims to solve the problem that safety accidents easily occur since substation monitoring staff or constructors cannot see a safety distance from an electrified device. An infrared sensor IC1 is used for acquiring a human body infrared signal within a preset safety threshold. The electrical signal output end of the infrared sensor IC1 is connected with the electrical signal input end of a signal amplifier circuit; an amplified signal output end of the signal amplifier circuit is connected with the voltage comparison signal input end of a voltage comparator; the voltage comparison signal output end of the voltage comparator is connected with the delay signal input end of an alarm delay circuit; the delay signal output end of the alarm delay circuit is connected with the alarm signal input end of an acoustic alarm circuit; the acoustic alarm circuit gives out a warning through an acoustical signal. The safety alarm is used for acoustic alarming for the electrified parts.

Description

technical field [0001] The invention relates to a safety warning alarm for live parts used in substations, and belongs to the technical field of warnings for live equipment in substations. Background technique [0002] On the switch and knife switch operating handle of the live equipment in the substation, on the ladder of the live equipment, on the fence of the live equipment, and at the front and rear net doors of the high-voltage switchgear at the live interval, because the guardians or construction personnel cannot intuitively obtain the safety of the live equipment. It is very easy to stray into the safety alert area of ​​live equipment, resulting in personal electric shock accidents and safety accidents. Contents of the invention [0003] The purpose of the present invention is to solve the problem that substation guardians or construction personnel can easily cause safety accidents because they cannot intuitively obtain the safe distance from live equipment, and pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S11/12
CPCG01S11/12G01R19/16538G08B13/19
Inventor 唐振宇李晓波黄海彭良杰胡晓永温胜林张婷娟
Owner STATE GRID CORP OF CHINA
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