CN204442341U - Digital signal isolation module - Google Patents
Digital signal isolation module Download PDFInfo
- Publication number
- CN204442341U CN204442341U CN201520229442.3U CN201520229442U CN204442341U CN 204442341 U CN204442341 U CN 204442341U CN 201520229442 U CN201520229442 U CN 201520229442U CN 204442341 U CN204442341 U CN 204442341U
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- China
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- current
- limiting resistance
- signal
- isolation module
- digital signal
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Abstract
The utility model discloses a kind of digital signal isolation module, comprise signal input part and signal output part, signal output part comprises power positive end signal end and power supply negative terminal signal end, signal input part is connected with the first current-limiting resistance, current-limiting resistance is connected with optocoupler input, one end of optocoupler output and the second current-limiting resistance, one end of 3rd current-limiting resistance, one end of 4th current-limiting resistance is connected with power supply negative terminal signal end, second current-limiting resistance is in parallel with the 3rd current-limiting resistance and the 5th current-limiting resistance, 3rd current-limiting resistance is connected with jumper 1/2 mouthful, the other end of the 4th current-limiting resistance is connected with triode with the 5th current-limiting resistance, 4th current-limiting resistance, 5th current-limiting resistance and triode composition negative circuit, triode is connected with jumper 3/4 mouthful, the utility model has the following advantages: adopt element few, and without the need to application-specific integrated circuit, structure is simple, very practical to rush repair.
Description
Technical field
The utility model relates to ship electronic technical field, specifically, relates to a kind of digital signal isolation module.
Background technology
Certain signal of ship's navigation equipment can be forced requirement and receive in other navigational equipment or admittance equipment.Particularly in maintenance of the vessel process, the equipment that ship is changed and original be not same producer model, or have new ship specification requirement, some ship's navigation equipment must be connected to the signal of certain particular device.And the signal port of input equipment and output equipment is all have source interface to mate, signal power source isolation module must be used.
Utility model content
The purpose of this utility model, is to overcome above-mentioned limitation, thus provides a kind of element that adopts few, and without the need to application-specific integrated circuit, structure is simple, the digital signal isolation module very practical to rush repair.
The purpose of this utility model is achieved through the following technical solutions: a kind of digital signal isolation module, comprise signal input part and signal output part, signal output part comprises power positive end signal end and power supply negative terminal signal end, signal input part is connected with the first current-limiting resistance, first current-limiting resistance is connected with optocoupler input, one end of optocoupler output and the second current-limiting resistance, one end of 3rd current-limiting resistance, one end of 4th current-limiting resistance is connected with power supply negative terminal signal end, second current-limiting resistance is in parallel with the 3rd current-limiting resistance and the 5th current-limiting resistance, 3rd current-limiting resistance is connected with jumper 1/2 mouthful, the other end of the 4th current-limiting resistance is connected with triode with the 5th current-limiting resistance, 4th current-limiting resistance, 5th current-limiting resistance and triode composition negative circuit, triode is connected with jumper 3/4 mouthful.
Preferably, the first current-limiting resistance is 680 Ω.
Preferably, the 3rd current-limiting resistance is 100 Ω-300 Ω.
Preferably, the 4th current-limiting resistance is 2.2K Ω-10K Ω.
Preferably, the 3rd current-limiting resistance is 200 Ω.
Preferably, the 4th current-limiting resistance is 2.2K Ω.
Preferably, the 4th current-limiting resistance is 10K Ω.
In sum, the utility model has the following advantages: adopt element few, and without the need to application-specific integrated circuit, structure is simple, very practical to rush repair.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model;
Number in the figure: R1-first current-limiting resistance, R2-second current-limiting resistance, R3-the 3rd current-limiting resistance, R4-the 4th current-limiting resistance, R5-the 5th current-limiting resistance, OC-optocoupler, J1-jumper, Q1-triode.
Embodiment
In order to deepen understanding of the present utility model, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, and this embodiment, only for explaining the utility model, does not form the restriction to the utility model protection range.
A kind of digital signal isolation module as shown in Figure 1, comprise signal input part and signal output part, signal output part comprises power positive end signal end and power supply negative terminal signal end, signal input part is connected with the first current-limiting resistance R1, first current-limiting resistance R1 is connected with optocoupler OC input, one end of optocoupler OC output and the second current-limiting resistance R2, one end of 3rd current-limiting resistance R3, one end of 4th current-limiting resistance R4 is connected with power supply negative terminal signal end, second current-limiting resistance R2 is in parallel with the 3rd current-limiting resistance R3 and the 5th current-limiting resistance R5, connect for 1/2 mouthful of 3rd current-limiting resistance R3 and jumper J1, the other end of the 4th current-limiting resistance R4 is connected with triode Q1 with the 5th current-limiting resistance R5, 4th current-limiting resistance R4, 5th current-limiting resistance R5 and triode Q1 forms negative circuit, 3/4 mouthful of triode Q1 and jumper J1 is connected.
This device adopts optoelectronic isolating element to be kept apart by the device power supply (DPS) that two kinds need digital communication to connect, active signal is equivalent to be transformed into passive signal, just signal directly can be received another active signal input port (equipment), realize two direct communications of equipment.As Fig. 1, by a digital pulse signal, be linked in the navigational equipment of an active port: first, signal delivers to optocoupler OC input through R1 current limliting, R1 is 680 Ω, produce make-and-break signal at the output of optocoupler OC, again make-and-break signal is become electric impulse signal by the power supply of receiving equipment and export.In figure, R2, R3 play metering function, need choose according to the semaphore request of receiving equipment, should not be too large, and R3 is 100 Ω-300 Ω.R4, R5, Q1 form a negative circuit, and R4 is 2.2K Ω-10K Ω, if receiving equipment communication port is signal input part and public end (0V) configuration, need to add negative circuit, and ensure input, output signal homophase, jumper J1 connects 3-4 hole.If receiving equipment communication port is power positive end and signal input part configuration, then J1 disconnects jumper 3-4 hole, and connect 1-2 hole, negative circuit is inoperative, is exported by the direct control signal of optocoupler.Can ensure that device signal end is synchronous with original signal like this.Solve digital signal and be input to difficulty in the equipment of active PORT COM.
Embodiment: the 3rd current-limiting resistance is 200 Ω.
Embodiment: the 4th current-limiting resistance is 2.2K Ω.
Embodiment: the 4th current-limiting resistance is 10K Ω.
Claims (7)
1. a digital signal isolation module, comprise signal input part and signal output part, it is characterized in that: described signal output part comprises power positive end signal end and power supply negative terminal signal end, signal input part is connected with the first current-limiting resistance (R1), first current-limiting resistance (R1) is connected with optocoupler (OC) input, one end of optocoupler (OC) output and the second current-limiting resistance (R2), one end of 3rd current-limiting resistance (R3), one end of 4th current-limiting resistance (R4) is connected with power supply negative terminal signal end, described second current-limiting resistance (R2) is in parallel with the 3rd current-limiting resistance (R3) and the 5th current-limiting resistance (R5), described 3rd current-limiting resistance (R3) is connected with jumper (J1) 1/2 mouthful, the other end of described 4th current-limiting resistance (R4) is connected with triode (Q1) with the 5th current-limiting resistance (R5), described 4th current-limiting resistance (R4), 5th current-limiting resistance (R5) and triode (Q1) form negative circuit, described triode (Q1) is connected with jumper (J1) 3/4 mouthful.
2. a kind of digital signal isolation module according to claim 1, is characterized in that: described first current-limiting resistance (R1) is 680 Ω.
3. a kind of digital signal isolation module according to claim 1, is characterized in that: described 3rd current-limiting resistance (R3) is 100 Ω-300 Ω.
4. a kind of digital signal isolation module according to claim 1, is characterized in that: described 4th current-limiting resistance (R4) is 2.2K Ω-10K Ω.
5. a kind of digital signal isolation module according to claim 1, is characterized in that: described 3rd current-limiting resistance (R3) is 200 Ω.
6. a kind of digital signal isolation module according to claim 1, is characterized in that: described 4th current-limiting resistance (R4) is 2.2K Ω.
7. a kind of digital signal isolation module according to claim 1, is characterized in that: described 4th current-limiting resistance (R4) is 10K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520229442.3U CN204442341U (en) | 2015-04-16 | 2015-04-16 | Digital signal isolation module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520229442.3U CN204442341U (en) | 2015-04-16 | 2015-04-16 | Digital signal isolation module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204442341U true CN204442341U (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520229442.3U Expired - Fee Related CN204442341U (en) | 2015-04-16 | 2015-04-16 | Digital signal isolation module |
Country Status (1)
| Country | Link |
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| CN (1) | CN204442341U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753521A (en) * | 2015-04-16 | 2015-07-01 | 南通中远船务自动化有限公司 | Digital signal isolating module |
-
2015
- 2015-04-16 CN CN201520229442.3U patent/CN204442341U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753521A (en) * | 2015-04-16 | 2015-07-01 | 南通中远船务自动化有限公司 | Digital signal isolating module |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20200416 |