CN202231426U - Lightning protection circuit for electrical equipment control system - Google Patents
Lightning protection circuit for electrical equipment control system Download PDFInfo
- Publication number
- CN202231426U CN202231426U CN2011202409804U CN201120240980U CN202231426U CN 202231426 U CN202231426 U CN 202231426U CN 2011202409804 U CN2011202409804 U CN 2011202409804U CN 201120240980 U CN201120240980 U CN 201120240980U CN 202231426 U CN202231426 U CN 202231426U
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- signal
- control system
- optical fiber
- protection circuit
- lightning protection
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Abstract
The utility model discloses a lightning protection circuit for an electrical equipment control system, which can effectively prevent lightning stroke and prevent a high voltage from entering into the control system, thereby ensuring the operation safety of the control system. The lightning protection circuit concretely for the electrical equipment control system comprises an on-site sensor, a module converting electric signals into optical signals, a module converting the optical signals into the electric signals, a control system, an isolating power supply, a signal transmitting line and an optical fiber. According to the technical scheme, the lightning protection circuit for the electrical equipment control system can simultaneously support the transparent transmission of multi-channel switch value signals and analog signals through the optical fiber without modifying the communication protocol of users, thereby resolving the problems of electromagnetic interference, geologic environment interference and lightning damage, effectively increasing the reliability, safety and confidentiality of control signals, simultaneously resolving the problem of being short in transmission distance in the prior art, and enabling the long distance transmission to be realized.
Description
Technical field
The utility model relates to a kind of lightning protection circuit, particularly a kind of lightning protection device of electric equipment control system.
Background technology
At automation field,, dispose a large amount of transducers for the information of collection site and the running status of field apparatus; And be installed in outdoorly, at thunderstorm season, these transducers are easy to be struck by lightning; Because most of transducer communicates information to controller through lead, PLC for example is so the instant high-voltage that produces during thunderbolt can be incorporated into controller by lead; Controller produce is threatened even damages, make the control system can't operate as normal.This patent proposes a kind of solution, can effectively prevent to be struck by lightning to avoid the high voltage metering-in control system, thereby protect the security of operation of controller.
The utility model content
The utility model purpose is: a kind of lightning protection circuit of electric equipment control system is provided, can effectively prevents to be struck by lightning and avoid the high voltage metering-in control system, thereby protect the security of operation of controller.
The utility model solves the technical scheme that its technical problem adopted: a kind of lightning protection circuit of electric equipment control system specifically comprises:
Spot sensor, said spot sensor site device state of switch amount signal and analog signals.
The signal of telecommunication changes optic module, and the described signal of telecommunication changes optic module can convert electrical signal information into can in optical fiber, transmit light signal.
Optical fiber changes signal module, and described optical fiber changes signal module can be with the signal of telecommunication of the light signal information translation of transmitting in the optical fiber for can in signal transmssion line, transmitting.
Control system, described control system are the control system of automation electric equipment, the operation that switching value signal through collecting the spot sensor transmission and analog signals come control appliance.
Insulating power supply, said insulating power supply changes signal module with said spot sensor, said signal of telecommunication commentaries on classics optic module, said optical fiber, said control system links to each other separately respectively, has avoided interfering with each other through power supply.
Signal transmssion line, described signal transmssion line is used for transmitting switching value signal and analog signals with the form of the signal of telecommunication.
Optical fiber, described optical fiber, the switching value signal that is used for the signal of telecommunication is changeed the light signal form of optic module output changes signal module with the remote transparent optical fiber that sends to of analog signals, and support multi-channel switch amount signal and analog signals.
Wherein, The described spot sensor and the described signal of telecommunication change optic module through the signal transmssion line coupled in series; The described signal of telecommunication changes optic module and described optical fiber changes signal module through the optical fiber coupled in series, and described optical fiber changes signal module and described control system is passed through the signal transmssion line coupled in series.Above-described spot sensor, the signal of telecommunication change optic module, optical fiber changes signal module, control system, supply power separately by the insulating power supply of each self-configuring.
The beneficial effect of the utility model is: can support multichannel switching value signal and the transparent transmission of analog signals on optical fiber simultaneously; Need not to change the user's communications agreement; Solved electromagnetic interference, encircle and disturb and a difficult problem that thunder and lightning destroys; Improve control signal reliability, fail safe and confidentiality greatly, also solved the near problem of traditional approach transmission range simultaneously, realized long-distance transmissions.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further specified.
The utility model solves the technical scheme that its technical problem adopted: a kind of lightning protection circuit of electric equipment control system specifically comprises:
Spot sensor, said spot sensor site device state of switch amount signal and analog signals.
The signal of telecommunication changes optic module, and the described signal of telecommunication changes optic module can convert electrical signal information into can in optical fiber, transmit light signal information.
Optical fiber changes signal module, and described optical fiber changes signal module can be with the electrical signal information of the light signal information translation of transmitting in the optical fiber for can in signal transmssion line, transmitting.
Control system, described control system are the control system of automation electric equipment, the operation that switching value signal through collecting the spot sensor transmission and analog signals come control appliance.
Insulating power supply, said insulating power supply changes signal module with said spot sensor, said signal of telecommunication commentaries on classics optic module, said optical fiber, said control system links to each other separately respectively, has avoided interfering with each other through power supply.
Signal transmssion line, described signal transmssion line is used for transmitting switching value signal and analog signals with the form of the signal of telecommunication.
Optical fiber, described optical fiber, the remote transparent optical fiber that sends to of switching value signal that is used for the signal of telecommunication is changeed the light signal form of optic module output changes signal module, and supports multi-channel switch amount signal and analog signals.
The physical circuit syndeton is as shown in Figure 1: spot sensor 1 is sent to the signal of telecommunication through signal transmssion line 6 with the switching value signal of electrical signal form changes optic module 2; Change in the optic module 2 switching value signal and the analog signals that switching value signal and analog signals with electrical signal form convert the light signal form at the signal of telecommunication; Change signal module 3 through optical fiber 7 remote transparent transmission to optical fiber then; Switching value signal with the light signal form in optical fiber commentaries on classics signal module 3 is reduced to switching value signal and the analog signals of exporting identical electrical signal form with spot sensor 1 with analog signals; And through signal transmssion line 6 access control systems; 5 is insulating power supply, and each module has been avoided interfering with each other through power supply by the insulating power supply power supply of configuration separately.
More than show and described basic principle of the utility model and the advantage of principal character and the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains the part effective means of the utility model in Chinese application; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model is applicable to any checking content of utilizing the Chinese language characteristic, and these checking contents all fall in the utility model scope that requires protection.The utility model requires protection range to be defined by appending claims and equivalent thereof.
Claims (5)
1. the lightning protection circuit of an electric equipment control system; Comprise some spot sensors; Said spot sensor site device state of switch amount signal and analog signals; It is characterized in that comprise that also the signal of telecommunication changes optic module, optical fiber changes signal module, optical fiber, control system, said spot sensor changes optic module with the said signal of telecommunication and links to each other through signal transmssion line; The said signal of telecommunication changes optic module and links to each other through optical fiber with said optical fiber commentaries on classics signal module, and said optical fiber changes signal module and links to each other through signal transmssion line with said control system.
2. the lightning protection circuit of a kind of electric equipment control system according to claim 1 is characterized in that: support multichannel switching value signal and the transparent transmission of analog signals on said optical fiber.
3. the lightning protection circuit of a kind of electric equipment control system according to claim 1 is characterized in that: described signal of telecommunication commentaries on classics optic module can convert the spot sensor electrical signal delivered into light signal and in optical fiber, transmit.
4. the lightning protection circuit of a kind of electric equipment control system according to claim 1 is characterized in that: described optical fiber commentaries on classics signal module can convert the light signal that transmits in the optical fiber into the signal of telecommunication and in signal transmssion line, transmit.
5. the lightning protection circuit of a kind of electric equipment control system according to claim 2; It is characterized in that: also comprise some insulating power supplies, said insulating power supply changes signal module with said spot sensor, said signal of telecommunication commentaries on classics optic module, said optical fiber, said control system links to each other separately respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202409804U CN202231426U (en) | 2011-07-08 | 2011-07-08 | Lightning protection circuit for electrical equipment control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202409804U CN202231426U (en) | 2011-07-08 | 2011-07-08 | Lightning protection circuit for electrical equipment control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202231426U true CN202231426U (en) | 2012-05-23 |
Family
ID=46082000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202409804U Expired - Lifetime CN202231426U (en) | 2011-07-08 | 2011-07-08 | Lightning protection circuit for electrical equipment control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202231426U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104361742A (en) * | 2014-12-03 | 2015-02-18 | 中国科学院宁波材料技术与工程研究所 | Device for enhancing anti-interference capability of transmission signal of motor sensor and device for enhancing anti-interference capability of transmission signal of motor sensor |
| CN111193248A (en) * | 2019-12-23 | 2020-05-22 | 中广核研究院有限公司 | Photoelectric isolation box for preventing nuclear power station from being struck by lightning and control method thereof |
-
2011
- 2011-07-08 CN CN2011202409804U patent/CN202231426U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104361742A (en) * | 2014-12-03 | 2015-02-18 | 中国科学院宁波材料技术与工程研究所 | Device for enhancing anti-interference capability of transmission signal of motor sensor and device for enhancing anti-interference capability of transmission signal of motor sensor |
| CN111193248A (en) * | 2019-12-23 | 2020-05-22 | 中广核研究院有限公司 | Photoelectric isolation box for preventing nuclear power station from being struck by lightning and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200083, Shanghai, Hongkou District water circuit No. 120, west side of the four Patentee after: Shanghai Hualing power station equipment Limited by Share Ltd Address before: 200083, Shanghai, Hongkou District water circuit No. 120, west side of the four Patentee before: Shanghai Hualing Power Station Complete Equipment Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |