CN203722659U - Digital telecontrol channel interface board - Google Patents
Digital telecontrol channel interface board Download PDFInfo
- Publication number
- CN203722659U CN203722659U CN201420046372.3U CN201420046372U CN203722659U CN 203722659 U CN203722659 U CN 203722659U CN 201420046372 U CN201420046372 U CN 201420046372U CN 203722659 U CN203722659 U CN 203722659U
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- CN
- China
- Prior art keywords
- diode
- terminals
- terminal
- interface board
- channel interface
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- Expired - Fee Related
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Abstract
The utility model relates to a digital telecontrol channel interface board, which comprises an interface board body (1), wherein the interface board body (1) is provided with a, b, c, d, e, f terminals, and is characterized in that: the a terminal, the c terminal and the e terminal are connected together through connecting lines; a diode D1 is connected in series between the b terminal and the d terminal, the positive electrode of the diode D1 is connected with the d terminal, the negative electrode of the diode D1 is connected with the b terminal, and the diode D1 is connected with a resistor R1 in parallel; a diode D2 is connected in series between the b terminal and the f terminal, the positive electrode of the diode D2 is connected with the f terminal, the negative electrode of the diode D2 is connected with the b terminal, and the diode D2 is connected with a resistor R2 in parallel; and the diode D1 and the diode D2 can adopt 1N4148 diodes, and the resistors can adopt 10k omega resistors. Since the digital telecontrol channel interface board is simple in circuit structure, adopts few elements and requires no power supply, the failure rate is extremely low, the reliability is high, and the cost is low.
Description
Technical field
The utility model belongs to communication equipment technical field, relates in particular to a kind of digital telecontrol channel interface board.
Background technology
The effect of numeral telecontrol channel interface board is that a railway digital signal is converted to active and standby two paths of signals, and this two paths of signals can switch main and standby relation by front server, and distant signal is issued active and standby two-way simultaneously, and main website is by mailing to a distant place as main passage.Current digital telecontrol channel interface board complex structure, components and parts are many, also need front server switching channel main and standby relation, easily break down.
Summary of the invention
The purpose of this utility model is a kind of simple in structure and digital telecontrol channel interface board that failure rate is extremely low of design.Realizing the technical scheme that the purpose of this utility model takes is: a kind of digital telecontrol channel interface board, include interface plate body, interface plate body is provided with a, b, c, d, e, f terminals, it is characterized in that: a terminals, c terminals and e terminals link together by connecting line, series diode D1 between b terminals and d terminals, the positive pole of diode D1 connects d terminals, the negative pole of diode D1 connects b terminals, diode D1 is in parallel with resistance R 1, simultaneously, series diode D2 between b terminals and f terminals, the positive pole of diode D2 connects f terminals, the negative pole of diode D2 connects b terminals, diode D2 is in parallel with resistance R 2.Described diode D1 and diode D2 can use 1N4148, and resistance uses 10k Ω.
The utility model is because circuit structure is simple, and element used is few, and without power supply, therefore failure rate is extremely low, and reliability is high, with low cost.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure, 1, interface plate body, Tx1, Tx2 are the transmit ports of main website two serial ports, Rx1, Rx2 are the ports of accepting of main website two serial ports.
Embodiment
With reference to accompanying drawing, a kind of digital telecontrol channel interface board, include interface plate body, interface plate body is provided with a, b, c, d, e, f terminals, it is characterized in that: a terminals, c terminals and e terminals link together by connecting line, series diode D1 between b terminals and d terminals, the positive pole of diode D1 connects d terminals, the negative pole of diode D1 connects b terminals, diode D1 is in parallel with resistance R 1, simultaneously, series diode D2 between b terminals and f terminals, the positive pole of diode D2 connects f terminals, the negative pole of diode D2 connects b terminals, diode D2 is in parallel with resistance R 2.Described diode D1 and diode D2 can use 1N4148, and resistance uses 10k Ω.
Operation principle of the present utility model is as follows:
With reference to accompanying drawing, in the time that main website serial ports does not send data, Tx1, Tx2 are low level is added to external channel receiving terminal by resistance, while having data to send, Tx1, Tx2 have high level output, receiving terminal through diode to external channel, because the serial ports that main website is two sends data when different, therefore between Tx1, Tx2, can not interfere with each other, all signal can be issued to the receiving terminal of external channel; The data that external channel sends can be issued Rx1, Rx2 simultaneously.So just complete the function of channel plate.
Claims (2)
1. a digital telecontrol channel interface board, include interface plate body (1), interface plate body (1) is provided with a, b, c, d, e, f terminals, it is characterized in that: a terminals, c terminals and e terminals link together by connecting line, series diode D1 between b terminals and d terminals, the positive pole of diode D1 connects d terminals, the negative pole of diode D1 connects b terminals, diode D1 is in parallel with resistance R 1, simultaneously, series diode D2 between b terminals and f terminals, the positive pole of diode D2 connects f terminals, the negative pole of diode D2 connects b terminals, diode D2 is in parallel with resistance R 2.
2. according to digital telecontrol channel interface board claimed in claim 1, it is characterized in that: described diode D1 and diode D2 can use 1N4148, resistance uses 10k Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420046372.3U CN203722659U (en) | 2014-01-25 | 2014-01-25 | Digital telecontrol channel interface board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420046372.3U CN203722659U (en) | 2014-01-25 | 2014-01-25 | Digital telecontrol channel interface board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203722659U true CN203722659U (en) | 2014-07-16 |
Family
ID=51161778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420046372.3U Expired - Fee Related CN203722659U (en) | 2014-01-25 | 2014-01-25 | Digital telecontrol channel interface board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203722659U (en) |
-
2014
- 2014-01-25 CN CN201420046372.3U patent/CN203722659U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20150125 |
|
| EXPY | Termination of patent right or utility model |