CN2838147Y - Lightning prevention module for signal transmission via dry note - Google Patents
Lightning prevention module for signal transmission via dry note Download PDFInfo
- Publication number
- CN2838147Y CN2838147Y CN 200520109309 CN200520109309U CN2838147Y CN 2838147 Y CN2838147 Y CN 2838147Y CN 200520109309 CN200520109309 CN 200520109309 CN 200520109309 U CN200520109309 U CN 200520109309U CN 2838147 Y CN2838147 Y CN 2838147Y
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- signal transmission
- input
- lightning
- dry contact
- dry
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Abstract
The utility model discloses a lightning protection module for dry-note signal transmission, which is provided with at least one circuit used for dry-note signal transmission, and each circuit is connected in series with both current limiting resistors, wherein one end of one resistor is grounded with the other end connected with dry-node signal input, and one end of the other resistor is connected with the dry-node signal input with the other end connected to the input end of a photon coupled isolator. The two input ends of the photon coupled isolator are connected in parallel with decoupling filtering capacitors used for surge energy liberation and are externally connected with power supply input, and the two output ends of the photon coupled isolator output dry-node signals. The utility model makes use of the electrical isolation function of the photon coupled isolator to realize isolation for lightning stroke surge passing through cable signals, and the utility model effectively improves the protection of input dry-node signals to the lightning stroke surge.
Description
Technical field
The utility model belongs to the lightning-protection module that is used for communication system devices, relates in particular to a kind of signal transmission lightning-protection module that utilizes the light-coupled isolation protection.
Background technology
Along with the development of mechanics of communication, the equipment supplier asks equipment and more and more comes height, brings the design that improves equipment dependability to bring higher requirement to equipment manufacturers like this.To signal lighting protection design, improve corresponding performance on the especially former equipment and do not change and improve its lightning protection properties under the situation of original equipment and have difficulties.
In the existing communication apparatus, especially mobile communication base station system, support that mostly (the dry contact input comprises two inputs based on the dry contact mode, so-called dry contact mode utilizes the break-make of these two inputs to characterize the mode that input changes exactly) external environment condition alarm input, its circuit is generally as shown in Figure 1, it has a significant drawback, therefore be exactly not with communication apparatus and outside incoming line electrical isolation, when being struck by lightning or surge level when higher, communication apparatus still easily causes damage.
Shown in Figure 1 is dry contact signal input interface circuit commonly used at present, and element 3 is the resistance of 1K ohm, and element 4 is 33 ohm a resistance, and element 5 is the resistance of 10K ohm, and element 6 is driver commonly used.Outside dry contact input signal is input in the communication apparatus by port one, 2.The dry contact interface circuit of communication apparatus, by move on the inside power supply VCC (be generally+5V or+3.3V) element 3, pull down to the element 5 on ground and the element 4 of serial connection, just constituted the basic interface circuit of dry contact input.Circuit above utilizing when the dry contact input signal is conducting state, during port one, 2 conductings just, will be imported a high level to element 6; When the dry contact input signal is off-state, when just port one, 2 disconnects, will import a low level to element 6.But this interface circuit does not add any protective treatment, when superposeed on the input dry contact signal thunderbolt or surge disturb, will be directly inputted to communication apparatus inside, causes the destruction to communication apparatus.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of dry contact signal transmission lightning-protection module, can improve the protection of dry contact signal to the wave swimming of being struck by lightning, and improves lightning protection properties.
Be to realize the technical problems to be solved in the utility model, a kind of dry contact signal transmission of the utility model lightning-protection module, it comprises,
The utility model dry contact signal transmission lightning-protection module mainly is to utilize optical coupling isolator electrical isolation function to realize the thunderbolt wave swimming by cable signal is isolated, effectively improve of the protection of input dry contact signal to the wave swimming of being struck by lightning, can be under the prerequisite that the communication apparatus indoor design is not done to change, raising equipment improves the stability of equipment to the lightning protection grade of dry contact signal port.
Description of drawings
Below in conjunction with drawings and Examples, the utility model is described in detail:
Fig. 1 is dry contact signal input interface circuit figure of the prior art;
Fig. 2 is the utility model dry contact signal transmission lightning-protection module incoming communication equipment schematic diagram;
Fig. 3 is the circuit block diagram of the utility model dry contact signal transmission lightning-protection module incoming communication equipment;
Fig. 4 is the veneer and the plug scheme of installation of the utility model dry contact signal transmission lightning-protection module; Fig. 5 is a utility model dry contact signal transmission lightning-protection module overall schematic.
Embodiment
Externally circuit has been connected in series a dry contact signal transmission lightning-protection module with the communication apparatus centre; this module can be carried out electrical isolation to the dry contact signal of outside input; thereby the protection communication apparatus is not damaged by lightning surge, and the interface of communication apparatus need not done any change.
Shown in Figure 2 is the utility model dry contact signal transmission lightning-protection module incoming communication equipment schematic diagram.The dry contact signal of outside input, the protective treatment by dry contact signal transmission lightning-protection module of the present utility model is input in the communication apparatus again.Through protective treatment, the lightning surge interference even outside input dry contact signal has superposeed can not cause the destruction to communication apparatus yet like this.
As shown in Figure 3, the circuit block diagram of the utility model dry contact signal transmission lightning-protection module incoming communication equipment.The circuit of the utility model dry contact signal transmission lightning-protection module is made of the basic protection circuit on N road.Basic protection circuit comprises: resistance 101,103, element 102 are device power supply (DPS) ground, device power supply (DPS) 104, optical coupling isolator 105, decoupling filter capacitor 106.Wherein each element can adopt following value: device power supply (DPS) 104 is generally-48V, resistance the 101, the 103rd, 20K ohm (when device power supply (DPS) be-during 48V), the optical coupling isolator 105 general light-coupled isolation devices that use low-power consumption, decoupling filter capacitor 106 appearance values are generally used 0.01u.Adopt two resistance (element 101 and 103) that resistance is bigger of serial connection on each road holding wire, resistance plays the effect of current limliting; At the input of optical coupling isolator (element 105), a decoupling filter capacitor (element 106) in parallel again is convenient to the release of surge energy; Optical coupling isolator (element 105) then plays the effect of electrical isolation, does not influence the transmission of signal simultaneously.Disturb as big lightning surge,, can directly not be transferred in the communication apparatus, thereby play protective action disturbing because light-coupled isolation is arranged.
Fig. 4 has provided the veneer and the plug scheme of installation of utility model dry contact signal transmission lightning-protection module, is provided with the realization circuit of lightning-protection module in the PCB veneer; And welded the plug (inconsistent with title among the figure, as please to revise) that is complementary with communication apparatus interface connector socket respectively at the veneer two ends.Fig. 5 is a utility model dry contact signal transmission lightning-protection module overall schematic, by utilizing igelite (PVC) with whole module injection mo(u)lding, forms shell, and corresponding screw rod is installed on shell respectively and nut is installed.It is just very flexible in reality is utilized, only need original connector plug to pull out, the utility model lightning-protection module is serially connected in equipment and the former stube cable joint, and slave unit power supply input port own or power cabinet-48V interface for providing power supply, lightning-protection module just can reach the effect of lightning protection.
Claims (4)
1, a kind of dry contact signal transmission lightning-protection module is characterized in that comprising:
At least one is used for the circuit of dry contact signal transmission, every circuit all is serially connected with the resistance of two current limlitings, a resistance one end ground connection wherein, and the other end connects the input of passive node signal, another resistance one end connects the input of passive node signal, and the other end is connected an input of optical coupling isolator; Optical coupling isolator two inputs are parallel with one and are used for the decoupling filter capacitor that surge energy discharges, external power supply input again; Optical coupling isolator scene 2 end output passive node signal.
2, dry contact signal transmission lightning-protection module according to claim 1 is characterized in that further comprise a PCB veneer, described every circuit is arranged on the PCB veneer.
3, dry contact signal transmission lightning-protection module according to claim 2 is characterized in that, is respectively equipped with plug at described PCB veneer two ends.
4, dry contact signal transmission lightning-protection module according to claim 2 is characterized in that, further comprises a shell, and screw rod is set on affiliated shell and nut is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520109309 CN2838147Y (en) | 2005-06-02 | 2005-06-02 | Lightning prevention module for signal transmission via dry note |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520109309 CN2838147Y (en) | 2005-06-02 | 2005-06-02 | Lightning prevention module for signal transmission via dry note |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2838147Y true CN2838147Y (en) | 2006-11-15 |
Family
ID=37392637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520109309 Expired - Fee Related CN2838147Y (en) | 2005-06-02 | 2005-06-02 | Lightning prevention module for signal transmission via dry note |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2838147Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101207854B (en) * | 2007-12-17 | 2010-08-18 | 上海华为技术有限公司 | Apparatus for extending passive node |
| CN107528303A (en) * | 2016-12-15 | 2017-12-29 | 深圳市安特博防雷技术有限公司 | One kind isolation lightning-protection module |
-
2005
- 2005-06-02 CN CN 200520109309 patent/CN2838147Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101207854B (en) * | 2007-12-17 | 2010-08-18 | 上海华为技术有限公司 | Apparatus for extending passive node |
| CN107528303A (en) * | 2016-12-15 | 2017-12-29 | 深圳市安特博防雷技术有限公司 | One kind isolation lightning-protection module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061115 Termination date: 20130602 |