CN203312785U - Lightning protection circuit of telemetry terminal machine - Google Patents
Lightning protection circuit of telemetry terminal machine Download PDFInfo
- Publication number
- CN203312785U CN203312785U CN2013203794070U CN201320379407U CN203312785U CN 203312785 U CN203312785 U CN 203312785U CN 2013203794070 U CN2013203794070 U CN 2013203794070U CN 201320379407 U CN201320379407 U CN 201320379407U CN 203312785 U CN203312785 U CN 203312785U
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- resistance
- diode
- triode
- resistor
- gauge wire
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- Expired - Fee Related
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Abstract
The utility model discloses a lightning protection circuit of a telemetry terminal machine. The circuit comprises an input port. The input port is connected with a thickening lead. The other end of the thickening lead is grounded. The thickening lead is connected with an anti-thunder circuit. The anti-thunder circuit comprises a resistor R1, a resistor R2, a resistor R3, a diode, a comparator and a triode. The resistor R1 is connected in series with the resistor R2. The other end of the resistor R2 is grounded. The other end of the resistor R1 is connected to the thickening lead. One end of the resistor R3 is connected with a collector electrode of the triode and is simultaneously connected to the thickening lead, and the other end is connected to a negative electrode of the diode. A positive electrode of the diode is grounded. Two input terminals of the comparator are connected to a common terminal of the resistor R1 and the resistor R2 and the negative electrode of the diode respectively. An output terminal is connected to a base electrode of the triode. The circuit has the advantages that the structure of the circuit is simple and thunder and lightning on the telemetry terminal machine can be effectively discharged.
Description
Technical field
The utility model relates to a kind of lightning protection circuit, relates in particular a kind of telemetering terminal lightning prevention circuit.
Background technology
Telemetering terminal is that microprocessor is controlled, this electronic equipment interfaces is by issuing a dcs or SCADA(supervisory control and data aquisition system in physics circle) telemetry equipment, connecting object that system is based on control message changes system.Telemetering terminal also is telemetering terminal equipment usually, is applied in every field.Telemetering terminal generally is arranged on outdoor, and its environment is severe, and its inner electronic devices and components are more, very easily are struck by lightning.And the volume of telemetering terminal is generally less, its inner circuit is difficult for too complex.
The utility model content
The utility model provides a kind of telemetering terminal lightning prevention circuit, and its circuit structure is simple, can effectively the thunder and lightning that acts on telemetering terminal be released.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
The telemetering terminal lightning prevention circuit, it comprises input port, on described input port, be connected with and add heavy gauge wire, the described other end ground connection that adds heavy gauge wire, described adding on heavy gauge wire, be connected with lightning protection circuit, described lightning protection circuit comprises resistance R 1, resistance R 2, resistance R 3, diode, comparator and triode, described resistance R 1 and resistance R 2 series connection, and the other end ground connection of resistance R 2, the other end of resistance R 1 is connected to and adds on heavy gauge wire, one end of described resistance R 3 is connected and is connected to simultaneously with the collector electrode of triode and adds on heavy gauge wire, the other end is connected on the negative pole of diode, the plus earth of described diode, two inputs of described comparator are connected on the negative pole of the common port of resistance R 1 and resistance R 2 and diode, output is connected on the base stage of triode.
Further technical scheme is:
Described diode is voltage stabilizing didoe.
Described triode is NPN type triode.
The described diameter that adds heavy gauge wire is greater than 1 centimetre.
The resistance of described resistance R 1 and resistance R 2 equates.
Compared with prior art, the beneficial effects of the utility model are:
1, lightning protection circuit of the present utility model comprises 3 resistance, a comparator, a diode and a triode, and its circuit structure is simple.
2, when the large function of current of thunderbolt during in input port, diode is breakdown, and produces voltage on resistance R 2, now, the comparator upset, triode turn-offs, electric current flows away from adding heavy gauge wire, and it can effectively be released the thunder and lightning that acts on telemetering terminal, thereby plays the lightning protection effect.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is circuit theory diagrams of the present utility model.
Label in figure is: 1, add heavy gauge wire.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.Execution mode of the present utility model includes but not limited to the following example.
[embodiment]
Telemetering terminal lightning prevention circuit as shown in Figure 1, it comprises input port, on described input port, be connected with and add heavy gauge wire 1, the described other end ground connection that adds heavy gauge wire 1, described adding on heavy gauge wire 1, be connected with lightning protection circuit, described lightning protection circuit comprises resistance R 1, resistance R 2, resistance R 3, diode, comparator and triode, described resistance R 1 and resistance R 2 series connection, and the other end ground connection of resistance R 2, the other end of resistance R 1 is connected to and adds on heavy gauge wire 1, one end of described resistance R 3 is connected with the collector electrode of triode and is connected to simultaneously and adds on heavy gauge wire 1, the other end is connected on the negative pole of diode, the plus earth of described diode, two inputs of described comparator are connected on the negative pole of the common port of resistance R 1 and resistance R 2 and diode, output is connected on the base stage of triode.
Described diode is voltage stabilizing didoe.
Described triode is NPN type triode.
For the large electric current of can releasing, the described diameter that adds heavy gauge wire 1 is greater than 1 centimetre.
The resistance of described resistance R 1 and resistance R 2 equates.
The course of work of the present embodiment is as follows:
The emitter of the triode of this circuit is connected on the internal circuit of telemetering terminal, when thunder amplification current enters from input port, voltage stabilizing didoe is breakdown, now, the voltage difference of two inputs of comparator is very big, comparator upset, triode upset, electric current just flows away from adding heavy gauge wire 1, thereby plays the effect of lightning protection.
According to the above embodiments, can well complete the utility model.
Be as mentioned above embodiment of the present utility model.The utility model is not limited to above-mentioned execution mode, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technical scheme, within all falling into protection range of the present utility model.
Claims (5)
1. telemetering terminal lightning prevention circuit, it comprises input port, it is characterized in that: on described input port, be connected with and add heavy gauge wire (1), the described other end ground connection that adds heavy gauge wire (1), described adding on heavy gauge wire (1), be connected with lightning protection circuit, described lightning protection circuit comprises resistance R 1, resistance R 2, resistance R 3, diode, comparator and triode, described resistance R 1 and resistance R 2 series connection, and the other end ground connection of resistance R 2, the other end of resistance R 1 is connected to and adds on heavy gauge wire (1), one end of described resistance R 3 is connected with the collector electrode of triode and is connected to simultaneously and adds on heavy gauge wire (1), the other end is connected on the negative pole of diode, the plus earth of described diode, two inputs of described comparator are connected on the negative pole of the common port of resistance R 1 and resistance R 2 and diode, output is connected on the base stage of triode.
2. telemetering terminal lightning prevention circuit according to claim 1, it is characterized in that: described diode is voltage stabilizing didoe.
3. telemetering terminal lightning prevention circuit according to claim 1, it is characterized in that: described triode is NPN type triode.
4. telemetering terminal lightning prevention circuit according to claim 1, it is characterized in that: the described diameter that adds heavy gauge wire (1) is greater than 1 centimetre.
5. telemetering terminal lightning prevention circuit according to claim 1 is characterized in that: the resistance of described resistance R 1 and resistance R 2 equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203794070U CN203312785U (en) | 2013-06-28 | 2013-06-28 | Lightning protection circuit of telemetry terminal machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203794070U CN203312785U (en) | 2013-06-28 | 2013-06-28 | Lightning protection circuit of telemetry terminal machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312785U true CN203312785U (en) | 2013-11-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203794070U Expired - Fee Related CN203312785U (en) | 2013-06-28 | 2013-06-28 | Lightning protection circuit of telemetry terminal machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203312785U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346546A (en) * | 2013-06-28 | 2013-10-09 | 成都汉康信息产业有限公司 | Lightning protection circuit used for remote measurement terminal |
| CN105870904A (en) * | 2016-06-14 | 2016-08-17 | 四川福豆科技有限公司 | Cache server based on school co-education platform |
-
2013
- 2013-06-28 CN CN2013203794070U patent/CN203312785U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346546A (en) * | 2013-06-28 | 2013-10-09 | 成都汉康信息产业有限公司 | Lightning protection circuit used for remote measurement terminal |
| CN105870904A (en) * | 2016-06-14 | 2016-08-17 | 四川福豆科技有限公司 | Cache server based on school co-education platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Jing Inventor after: Chai Jun Inventor after: Chen Yuliang Inventor after: Geng Hongzhen Inventor before: Zhu Zhengxiu Inventor before: An Rui Inventor before: Yang Chunlong Inventor before: Han Xiujun Inventor before: Yang Mengpan |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHU ZHENGXIU AN RUI YANG CHUNLONG HAN XIUJUN YANG MENGSHAN TO: CHEN JING CHAI JUN CHEN YULIANG GENG HONGZHEN |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20170628 |