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Lightning protection circuit used for remote measurement terminal

A lightning protection circuit and lightning protection technology, applied in the direction of emergency protection circuit device, circuit device, emergency protection circuit device for limiting overcurrent/overvoltage, etc. Harsh and other problems, to achieve the effect of simple circuit structure

Inactive Publication Date: 2013-10-09
CHENGDU HANKANG INFORMATION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Telemetry terminals are generally installed outdoors, the environment is harsh, and there are many electronic components inside, so they are extremely vulnerable to lightning strikes

Method used

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  • Lightning protection circuit used for remote measurement terminal

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Embodiment

[0019] Such as figure 1 The shown lightning protection circuit for the telemetry terminal includes an input port, the input port is connected with a thickened wire 1, the other end of the thickened wire 1 is grounded, and the thickened wire 1 is grounded. 1 is connected with a lightning protection circuit, the lightning protection circuit includes a resistor R1, a resistor R2, a resistor R3, a diode, a comparator and a triode, the resistor R1 and the resistor R2 are connected in series, and the other end of the resistor R2 is grounded, and the resistor The other end of R1 is connected to the thickened wire 1, one end of the resistor R3 is connected to the collector of the triode and connected to the thickened wire 1 at the same time, the other end is connected to the negative pole of the diode, and the positive pole of the diode Grounded, the two input terminals of the comparator are respectively connected to the common terminal of the resistor R1 and the resistor R2 and the c...

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Abstract

The invention discloses a lightning protection circuit used for a remote measurement terminal. The lightning protection circuit comprises an input port, wherein the input port is connected with a thickening wire, the other end of the thickening wire is grounded, and the thickening wire is connected with a lightning protection circuit body. The lightning protection circuit body comprises a resistor R1, a resistor R2, a resistor R3, a diode, a comparator and an audion, wherein the resistor R1 is in serial connection with the resistor R2, the other end of the resistor R2 is grounded, the other end of the resistor R1 is connected with the thickening wire, one end of the resistor R3 is connected with a collector electrode of the audion and is connected with the thickening wire, the other end of the resistor R3 is connected with the negative pole of the diode, the positive pole of the diode is grounded, the two input ends of the comparator are connected with a common terminal of the resistor R1 and the resistor R2 and the negative pole of the diode, and the output end of the comparator is connected with a base electrode of the audion. The lightning protection circuit has the advantages of being simple in circuit structure, and capable of effectively discharging lightning acting on the remote measurement terminal.

Description

technical field [0001] The invention relates to a lightning protection circuit, in particular to a lightning protection circuit for a telemetry terminal. Background technique [0002] The telemetry terminal is controlled by a microprocessor, and the interface of the electronic device in the physical world is by issuing a distributed control system or SCADA (Supervisory and Data Acquisition System) telemetry data device, the system is based on the connection object of the control message. change the system. Telemetry terminals are usually also called telemetry terminal equipment, which are used in various fields. Telemetry terminals are generally installed outdoors, where the environment is harsh, and there are many electronic components inside, which are extremely vulnerable to lightning strikes. Moreover, the volume of the telemetry terminal is generally small, and its internal circuit is not easy to be too complicated. Contents of the invention [0003] The invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/02
Inventor 柴军朱正修曾建龙葛嘉莉
Owner CHENGDU HANKANG INFORMATION IND
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